using System;

public class Program

{

    public static void Main()

    {

        double firstNumber, secondNumber, thirdNumber, fourthNumber;

        Console.WriteLine("Now give me the first number:");

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

        Console.WriteLine("Now give me the 2nd number:");

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

        Console.WriteLine("Now give me the 3rd number:");

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

        Console.WriteLine("Now give me the 4thnumber:");

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

        Console.WriteLine("The product of these numbers is "+(firstNumber * secondNumber * thirdNumber * fourthNumber));

    }

}