Mellon Bank wants to experiment by adding a robot drive through at a cost of $226,000. The robot is expected to have a four year life and be sold for $85,000 at the end of its useful life. The belt is expected to lower labor by 158,000 each year as well as increase maintenance by 12,000 each year. Their working capital is not expected to change much. The required rate of return is 8%. What is the net present value of this investment