diff --git a/Calculator.cs b/Calculator.cs
new file mode 100644
index 00000000..cfe0e9b8
--- /dev/null
+++ b/Calculator.cs
@@ -0,0 +1,7 @@
+public static class Calculator
+{
+    /// <summary>
+    /// Умножает два числа.
+    /// </summary>
+    public static int Multiply(int a, int b) => a * b;
+}