G& W Machine Shop is evaluating the proposed acquisition of a new milling machine. The milling machine costs $150,000 and would cost another $12,000 to n modify it for special use by the company. The milling machine has an estimated service life of 5 years with a salvage value of $45,000. With this milling machine, the firm will be able to generate additional annual revenues of $175,000. However, it required a specially trained operator to run the machine at a cost of $60,000 annually for labor, $20,000 in material expenses and another $10,000 in annual overhead (power and utility) expenses. It also required an investment in working capital in the amount of $25,000, which will be recovered in full at the end of year 5. The milling machine falls into the MACRS seven year class, find the year by year alter tax net cash flow for the project at a 40% marginal tax rate and determine the NPW of the project at the company's after-tax MARR of 15%