TakeLastDigits

using System;

class TakeLastDigits
{
    static void Main()
    {
        int num = 39524;
        Console.WriteLine("The number is: " + num);
        Console.WriteLine();

        int takeLastOneDigit = num % 10;
        Console.WriteLine("The last ONE digit is: " + takeLastOneDigit);

        int takeLastTwoDigits = num % 100;
        Console.WriteLine("The last TWO digits are: " + takeLastTwoDigits);

        int takeLastThreeDigits = num % 1000;
        Console.WriteLine("The last THREE digits are: " + takeLastThreeDigits);

        int takeLastFourDigits = num % 10000;
        // Er, you got the point....
    }
}