public static void Main(string[] args)
{
int inpNumber;
Console.WriteLine("Encrypted number {0}", 7531);
Decryption d = new Decryption(7531);
d.DoDecryption();
Console.WriteLine("Decrypted number {0}", d.DecryptedNumber);
Console.Write("Enter encrypted four digit number: ");
inpNumber = Convert.ToInt32(Console.ReadLine());
d.Number = inpNumber;
d.DoDecryption();
Console.WriteLine("Decrypted number {0}", d.DecryptedNumber);
}