using System;

namespace Operation

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{

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    class Program

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    {

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        static void Main(string[] args)

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        {

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            double a, b, w, x, y, z;

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            Console.Write("Enter first number: ");

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            a = Convert.ToDouble(Console.ReadLine());

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            Console.Write("Enter second number: ");

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            b = Convert.ToDouble(Console.ReadLine());

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            w = a + b;

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            x = a - b;

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            y = a * b;

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            z = a / b;

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            Console.WriteLine("Addition: "+w);

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            Console.WriteLine("Subtraction: "+x);

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            Console.WriteLine("Multiplication: "+y);

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            Console.WriteLine("Division: "+z);

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        }

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    }

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}

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