static void Main(string[] args)
{
InstanceContext instanceContext = new InstanceContext(new CallBackHandler());
CalculatorServiceClient client = new CalculatorServiceClient(instanceContext);
client.AddTo(5D);
client.SubstractFrom(3D);
client.MultiplyBy(12D);
client.DivideBy(2D);
client.Clear();
Console.ReadLine();
client.Close();
Console.WriteLine("Terminado");
Console.ReadKey();
}