diff --git a/Calculator b/Calculator
new file mode 100644
index 0000000..3d25d87
--- /dev/null
+++ b/Calculator
@@ -0,0 +1,40 @@
+def add(x, y):
+    """Addition"""
+    return x + y
+
+def subtract(x, y):
+    """Subtraction"""
+    return x - y
+
+def multiply(x, y):
+    """multiplication"""
+    return x * y
+
+def divide(x, y):
+    """Division"""
+    if y != 0:
+        return x / y
+    else:
+        return "Error, divide -0-!"
+
+print("Choose transaction:")
+print("1. Addition")
+print("2. Subtraction")
+print("3. multiplication")
+print("4. Division")
+
+choice = input("Add number operation (1/2/3/4): ")
+
+num1 = float(input("Enter first number: "))
+num2 = float(input("Enter second number: "))
+
+if choice == '1':
+    print(num1, "+", num2, "=", add(num1, num2))
+elif choice == '2':
+    print(num1, "-", num2, "=", subtract(num1, num2))
+elif choice == '3':
+    print(num1, "*", num2, "=", multiply(num1, num2))
+elif choice == '4':
+    print(num1, "/", num2, "=", divide(num1, num2))
+else:
+    print("Incorrect input transaction")