private static void MultiplyOperation()
{
Calculator calculator = new Calculator(new MultiplyOperation());
int result = calculator.Calculate(NumberOne, NumberTwo);
Console.WriteLine("Multiply operation result: {0}", result);
}
private static void DivideOperation()
{
Calculator calculator = new Calculator(new DivideOperation());
int result = calculator.Calculate(NumberOne, NumberTwo);
Console.WriteLine("Divide operation result: {0}", result);
}