static void Main()
    {
        int  result;
        long elapsed;

        // evaluate a bunch of code using static evaluate function.
        elapsed = Evaluate.Elapsed(() =>
        {
            result = Multiply(1, 2);
            result = Multiply(2, 3);
            result = Multiply(3, 4);
        });

        // evaluate with specific return value, setting elapsed by reference
        result = Evaluate.ElapsedWithReturn(() => Multiply(1, 2), ref elapsed);

        // evaluate with specific return value, getting elapsed over time from class
        Evaluate evaluate = new Evaluate();

        result  = evaluate.IncrementTimer(() => Multiply(1, 2));
        result  = evaluate.IncrementTimer(() => Multiply(2, 3));
        elapsed = evaluate.Timer.ElapsedMilliseconds;
    }