Scalia's Cleaning Service is investigating the purchase of an ultrasound machine for cleaning window blinds. The machine would cost $136.700, including invoice cost, freight, and training of employees to operate it. Scalia's has estimated that the new machine would increase the company's cash flows, net of expenses, by $25.000 per year. The machine would have a 14-year useful life with no expected salvage value. (Ignore income taxes.) Click here to view Exhibit 13B-2. to determine the appropriate discount factor(s) using table. Required: Compute the machine's internal rate of return. (Round discount factor(s) to 3 decimal places and final answer to the closest interest rate. Omit the "%" sign in your response.) Internal rate of return % Compute the machine's net present value. Use a discount rate of 16%. (Leave no cells blank - be certain to enter "0" wherever required. Round discount factor(s) to 3 decimal places, intermediate and final answers to the nearest dollar amount. Omit the "$" sign in your response.) Net present value $ Suppose that the new machine would increase the company's annual cash flows, net of expenses, by only $20.000 per year. Under these conditions, compute the internal rate of return. (Round discount factor(s) to 3 decimal places and final answer to the closest interest rate. Omit the "%" sign in your response.) Internal rate of return %