"Your company purchased an airplane for $587,000 and will depreciate it using a 7-year MACRS with a 4-year life. Salvage value in year 4 is expected to be $170,000. The airplane is expected to increase company revenues by $217,000 per year. However, O&M costs are expected to be $23,000 per year. Your company is in the 21% tax bracket and the company's MARR is 20%. What is the Net Present Worth of this investment