static void Main()
{
Customer Bob = new Individual("Bob", "Sideshow");
Customer Iron = new Company("Iron", "Ltd.");
Account depo = new Deposit("bob", 1200.00m);
depo.NewCustomer = Bob;
depo.DepositMoney(100.50m);
depo.Withdraw(50.10m);
Console.WriteLine( depo.CalculateInterest(3.5m, 24, Bob) );
Account lo = new Loan("Iron Ltd.", 3210000.123m);
lo.NewCustomer = Iron;
lo.DepositMoney(2000.001m);
lo.Withdraw(20111.1m);
Console.WriteLine( lo.CalculateInterest(9.10m, 52, Iron) );
}