diff --git a/WebApplicationLesson1/Controllers/CalculatorController.cs b/WebApplicationLesson1/Controllers/CalculatorController.cs
new file mode 100644
index 0000000..5bed7aa
--- /dev/null
+++ b/WebApplicationLesson1/Controllers/CalculatorController.cs
@@ -0,0 +1,23 @@
+using Microsoft.AspNetCore.Mvc;
+
+namespace WebApplicationLesson1.Controllers
+{
+    public class CalculatorController : Controller
+    {
+        public string Index(double a, double b, char operation)
+        {
+            switch (operation)
+            {
+                case '-':
+                    return $"{a} {operation} {b} = {a - b}";
+                case '*':
+                    return $"{a} {operation} {b} = {a * b}";
+                case '/':
+                    return $"{a} {operation} {b} = {a / b}";
+                default:
+                    if (operation != '+' && operation != 0) return "Вы можете применить только операции сложения, вычитания и умножения";
+                    return $"{a} + {b} = {a + b}";
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/WebApplicationLesson1/Startup.cs b/WebApplicationLesson1/Startup.cs
index d9a1eb0..5dd4ff9 100644
--- a/WebApplicationLesson1/Startup.cs
+++ b/WebApplicationLesson1/Startup.cs
@@ -46,7 +46,7 @@ public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
             {
                 endpoints.MapControllerRoute(
                     name: "default",
-                    pattern: "{controller=Home}/{action=Index}/{id?}");
+                    pattern: "{controller=Home}/{action=Index}");
             });
         }
     }