The shell Corp. owns a piece of petroleum drilling equipment that costs &100,000 and will be depreciated by Straight-line depreciation with B=$100,000, N=5 years, S=$0. There is a combined 40% tax rate. Shell will lease the equipment to others each year and receive $50,000 per year. At the end of 3 years, the firm will sell the equipment for $30,000. If the firm requires a 10% after-tax rate of return, what is the PW of the investment?