using System;

public class Program

{

    public static void Main()

    {

        double a, b;

        a = double.Parse(Console.ReadLine());

        b = double.Parse(Console.ReadLine());

        Console.WriteLine("a + b = " + (a + b));

        Console.WriteLine("a - b = " + (a - b));

        Console.WriteLine("a * b = " + (a * b));

        Console.WriteLine("a / b = " + (a / b));

    }

}