public static void Main()
Console.WriteLine("Enter a number");
Int64 a = Convert.ToInt64(Console.ReadLine());
Console.WriteLine("Enter an operator");
string c = Convert.ToString(Console.ReadLine());
Console.WriteLine("Enter a number");
Int64 b = Convert.ToInt64(Console.ReadLine());
Console.WriteLine(Answer);
Console.WriteLine(Answer);
Console.WriteLine(Answer);
Console.WriteLine(Answer);
Console.WriteLine("==============\n==============\n==============\n==============\n");