diff --git a/front/index.html b/front/index.html
index 09ff26e..3e02e3a 100644
--- a/front/index.html
+++ b/front/index.html
@@ -24,8 +24,15 @@
             <button type="button" class="btn btn-primary" id="buttonMulti">*</button>
             <button type="button" class="btn btn-primary" id="buttonDiv">/</button>
         </div>
+        Выберите тип данных
+        <div>
+            <select id="type" class="form-select" >
+                <option value="int">Число</option>
+                <option value="string">Строка</option>
+            </select>
+        </div>
         Результат
-        <input id="res"></input>
+        <input id="res" type="text"></input>
     </div>
 </form>
 <script src="script.js"></script>
diff --git a/front/script.js b/front/script.js
index 6f2169d..e55baae 100644
--- a/front/script.js
+++ b/front/script.js
@@ -6,32 +6,37 @@ let buttonDiv = document.getElementById("buttonDiv");
 let numberOneInput = document.getElementById("first");
 let numberTwoInput = document.getElementById("second");
 let resultInput = document.getElementById("res");
+let typeInput = document.getElementById("type");
 
 buttonPlus.onclick = function(event) {
     let num_1 = numberOneInput.value;
     let num_2 = numberTwoInput.value;
-    fetch(`http://localhost:8080/sum?first=${num_1}&second=${num_2}`)
+    let type = typeInput.value;
+    fetch(`http://localhost:8080/sum?first=${num_1}&second=${num_2}&type=${type}`)
         .then(response => response.text())
         .then(res => resultInput.value = res);
 }
 buttonMinus.onclick = function(event) {
     let num_1 = numberOneInput.value;
     let num_2 = numberTwoInput.value;
-    fetch(`http://localhost:8080/minus?first=${num_1}&second=${num_2}`)
+    let type = typeInput.value;
+    fetch(`http://localhost:8080/minus?first=${num_1}&second=${num_2}&type=${type}`)
         .then(response => response.text())
         .then(res => resultInput.value = res);
 }
 buttonMulti.onclick = function(event) {
     let num_1 = numberOneInput.value;
     let num_2 = numberTwoInput.value;
-    fetch(`http://localhost:8080/multi?first=${num_1}&second=${num_2}`)
+    let type = typeInput.value;
+    fetch(`http://localhost:8080/multi?first=${num_1}&second=${num_2}&type=${type}`)
         .then(response => response.text())
         .then(response => resultInput.value = response);
 }
 buttonDiv.onclick = function(event) {
     let num_1 = numberOneInput.value;
     let num_2 = numberTwoInput.value;
-    fetch(`http://localhost:8080/div?first=${num_1}&second=${num_2}`)
+    let type = typeInput.value;
+    fetch(`http://localhost:8080/div?first=${num_1}&second=${num_2}&type=${type}`)
         .then(response => response.text())
         .then(res => resultInput.value = res);
 }
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/DemoApplication.java b/src/main/java/com/example/demo/DemoApplication.java
index caaa6e5..217cd73 100644
--- a/src/main/java/com/example/demo/DemoApplication.java
+++ b/src/main/java/com/example/demo/DemoApplication.java
@@ -12,35 +12,5 @@ public class DemoApplication {
 	public static void main(String[] args) {
 		SpringApplication.run(DemoApplication.class, args);
 	}
-	@GetMapping("/hello")
-	public String hello(@RequestParam(value = "name", defaultValue = "World") String name) {
-		return String.format("Hello %s!", name);
-	}
-	@GetMapping("/sum")
-	public String Sum(@RequestParam(defaultValue = "0") double first,
-					  @RequestParam(defaultValue = "0") double second) {
-		return Double.toString(first + second);
-	}
-
-	@GetMapping("/minus")
-	public String Ras(@RequestParam(defaultValue = "0") double first,
-					  @RequestParam(defaultValue = "0") double second) {
-		return Double.toString(first - second);
-	}
-
-	@GetMapping("/multi")
-	public String Pros(@RequestParam(defaultValue = "2") double first,
-					   @RequestParam(defaultValue = "2") double second) {
-		return Double.toString(first * second);
-	}
-
-	@GetMapping("/div")
-	public String Del(@RequestParam(defaultValue = "1") double first,
-					  @RequestParam(defaultValue = "1") double second) {
-		if (second == 0) {
-			return null;
-		}
-		return Double.toString(first / second);
-	}
 
 }
diff --git a/src/main/java/com/example/demo/speaker/controller/MethodController.java b/src/main/java/com/example/demo/speaker/controller/MethodController.java
new file mode 100644
index 0000000..647da48
--- /dev/null
+++ b/src/main/java/com/example/demo/speaker/controller/MethodController.java
@@ -0,0 +1,43 @@
+package com.example.demo.speaker.controller;
+
+import com.example.demo.speaker.service.MethodService;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class MethodController {
+    private final MethodService speakerService;
+
+    public MethodController(MethodService speakerService) {
+        this.speakerService = speakerService;
+    }
+
+    @GetMapping("/sum")
+    public String Sum(@RequestParam(value = "first", defaultValue = "1") Object first,
+                      @RequestParam(value = "second", defaultValue = "1") Object second,
+                      @RequestParam(value = "type", defaultValue = "int") String type) {
+        return speakerService.Sum(first,second,type);
+    }
+
+    @GetMapping("/minus")
+    public String Ras(@RequestParam(value = "first", defaultValue = "1") Object first,
+                      @RequestParam(value = "second", defaultValue = "1") Object second,
+                      @RequestParam(value = "type", defaultValue = "int") String type) {
+        return speakerService.Ras(first,second,type);
+    }
+
+    @GetMapping("/multi")
+    public String Pros(@RequestParam(value = "first", defaultValue = "1") Object first,
+                       @RequestParam(value = "second", defaultValue = "1") Object second,
+                       @RequestParam(value = "type", defaultValue = "int") String type) {
+        return speakerService.Pros(first,second,type);
+    }
+
+    @GetMapping("/div")
+    public String Del(@RequestParam(value = "first", defaultValue = "1") Object first,
+                      @RequestParam(value = "second", defaultValue = "1") Object second,
+                      @RequestParam(value = "type", defaultValue = "int") String type) {
+        return speakerService.Del(first,second,type);
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/speaker/domain/IMethod.java b/src/main/java/com/example/demo/speaker/domain/IMethod.java
new file mode 100644
index 0000000..310c34a
--- /dev/null
+++ b/src/main/java/com/example/demo/speaker/domain/IMethod.java
@@ -0,0 +1,11 @@
+package com.example.demo.speaker.domain;
+
+public interface IMethod<T> {
+    T Sum(T first, T second);
+
+    T Multiply(T first, Integer second);
+
+    T Minus(T first, Integer second);
+
+    T Div(T first, T second);
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/speaker/domain/MethodInt.java b/src/main/java/com/example/demo/speaker/domain/MethodInt.java
new file mode 100644
index 0000000..5c5f9be
--- /dev/null
+++ b/src/main/java/com/example/demo/speaker/domain/MethodInt.java
@@ -0,0 +1,27 @@
+package com.example.demo.speaker.domain;
+
+import org.springframework.stereotype.Component;
+
+@Component(value="int")
+public class MethodInt implements IMethod<Integer>{
+    public Integer Sum(Integer first, Integer second) {
+        return Integer.parseInt(first.toString()) + Integer.parseInt(second.toString());
+    }
+
+    public Integer Multiply(Integer first, Integer second) {
+        return Integer.parseInt(first.toString()) * Integer.parseInt(second.toString());
+    }
+
+    public Integer Minus(Integer first, Integer second) {
+        return Integer.parseInt(first.toString()) - Integer.parseInt(second.toString());
+    }
+
+    public Integer Div(Integer first, Integer second) {
+        int num = Integer.parseInt(second.toString());
+        if (num == 0){
+            return null;
+        }else{
+            return Integer.parseInt(first.toString()) / num;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/speaker/domain/MethodString.java b/src/main/java/com/example/demo/speaker/domain/MethodString.java
new file mode 100644
index 0000000..fb4cb55
--- /dev/null
+++ b/src/main/java/com/example/demo/speaker/domain/MethodString.java
@@ -0,0 +1,44 @@
+package com.example.demo.speaker.domain;
+
+import org.springframework.stereotype.Component;
+
+@Component(value="string")
+public class MethodString implements IMethod<String>{
+    @Override
+    public String Sum(String first, String second) {
+        return first.concat(second);
+    }
+
+    @Override
+    public String Multiply(String first, Integer second) {
+        if (second != 0){
+            String temp = "";
+            for (int i = 0; i < second; i++){
+                temp = temp.concat(first);
+            }
+            return temp;
+        }
+        else{
+            return first;
+        }
+    }
+
+    @Override
+    public String Minus(String first, Integer second) {
+        String temp = first;
+        if(temp.length() >= second){
+            return temp.substring(0, first.length() - second);
+        }else{
+            return first;
+        }
+    }
+
+    @Override
+    public String Div(String first, String second) {
+        if (first.contains(second)){
+            return "true";
+        }else{
+            return "false";
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/example/demo/speaker/service/MethodService.java b/src/main/java/com/example/demo/speaker/service/MethodService.java
new file mode 100644
index 0000000..3704e1e
--- /dev/null
+++ b/src/main/java/com/example/demo/speaker/service/MethodService.java
@@ -0,0 +1,51 @@
+package com.example.demo.speaker.service;
+
+import com.example.demo.speaker.domain.IMethod;
+import com.example.demo.speaker.domain.MethodString;
+import org.springframework.context.ApplicationContext;
+import org.springframework.stereotype.Service;
+
+@Service
+public class MethodService {
+    private final ApplicationContext applicationContext;
+
+    public MethodService(ApplicationContext applicationContext) {
+        this.applicationContext = applicationContext;
+    }
+
+    public String Sum(Object first, Object second, String type) {
+        final IMethod speaker = (IMethod) applicationContext.getBean(type);
+        if (speaker instanceof MethodString){
+            return String.format("%s", speaker.Sum(first,second));
+        }else{
+            return String.format("%s", speaker.Sum(Integer.parseInt(first.toString()),Integer.parseInt(second.toString())));
+        }
+    }
+
+    public String Ras(Object first, Object second, String type) {
+        final IMethod speaker = (IMethod) applicationContext.getBean(type);
+        if (speaker instanceof MethodString){
+            return String.format("%s", speaker.Minus(first,Integer.parseInt(second.toString())));
+        }else{
+            return String.format("%s", speaker.Minus(Integer.parseInt(first.toString()),Integer.parseInt(second.toString())));
+        }
+    }
+
+    public String Pros(Object first, Object second, String type) {
+        final IMethod speaker = (IMethod) applicationContext.getBean(type);
+        if (speaker instanceof MethodString){
+            return String.format("%s", speaker.Multiply(first,Integer.parseInt(second.toString())));
+        }else{
+            return String.format("%s", speaker.Multiply(Integer.parseInt(first.toString()),Integer.parseInt(second.toString())));
+        }
+    }
+
+    public String Del(Object first, Object second, String type) {
+        final IMethod speaker = (IMethod) applicationContext.getBean(type);
+        if (speaker instanceof MethodString){
+            return String.format("%s", speaker.Div(first,second));
+        }else {
+            return String.format("%s", speaker.Div(Integer.parseInt(first.toString()), Integer.parseInt(second.toString())));
+        }
+    }
+}
\ No newline at end of file