using System;

public class Program

{

    public static void multiply(int number)

    {

         int product = 1;

        for(int i = number;i>0;i--)

        {

             product = product*i;

        }

        Console.WriteLine("After all the calculations, it is: {0}", product);

    }

    public static void Main()

    {

        int number;

        Console.WriteLine("Please enter a number: ");

        number = Convert.ToInt32(Console.ReadLine());

        multiply(number);

    }

}