using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(" The answer of {0} + {1} is {2}", 15, 78, 15+78);

        Console.WriteLine(" The answer of {0} - {1} is {2}", 15, 78, 15-78);

        Console.WriteLine(" The answer of {0} * {1} is {2}", 15, 78, 15*78);

        Console.WriteLine(" The answer of {0} / {1} is {2}", 15, 78, 15/78);

    }

}