using System;

public class program

{

    public static void Main()

    {

        int num1, num2;

        num1=4;

        num2=2;

        Console.WriteLine("the + of {0} and {1} is {2}.",num1,num2,(num1+num2));

        Console.WriteLine("the - of {0} and {1} is {2}.",num1,num2,(num1-num2));

        Console.WriteLine("the * of {0} and {1} is {2}.",num1,num2,(num1*num2));

        Console.WriteLine("the /of {0} and {1} is {2:f2}.",num1,num2,((double)num1/num2));

    }

}