Market Top Investors, Inc., is considering the purchase of a $$345,000$ computer with an economic life of five years. The computer will be fully depreciated over five years using the straight$-$line method, at which time it will be worth $$60,000.$ The computer will replace two office employees whose combined annual salaries are $$86,000.$ The machine will also immediately lower the firm's required net working capital by $$75,000.$ This amount of net working capital will need to be replaced once the machine is sold. The corporate tax rate is $25$ percent. The appropriate discount rate is $8$ percent. Calculate the NPV of this project. show work step by step