public static void Main()
decimal maxCredit = 1000.00M;
decimal creditUsed = 23.25M;
decimal available = maxCredit - creditUsed;
Console.WriteLine("Maximum credit is: ${0}", maxCredit, maxCredit.ToString("C"));
Console.WriteLine("You have used this much credit: $" + creditUsed);
Console.WriteLine("Your available credit is: $" + available);