You are tasked with evaluating the purchase of a super computer for the controt room, The total initial investment (purchase, modification, and investment in net operating working capital) wil be $600,000. The machine wifl result in operating cash fiow of $240,000 per year for three years. When the machine is sold at time period three, the net sale price will be $180,000. The firm will also recover the investment in net working capital of $34634. What is the net present value of the investment if the required return is 12%