For the given cash flows, suppose the firm uses the NPV decision rule. Year Cash Flow 0 $ 175,000 1 60,000 2 73,000 3 93,000 a. At a required return of 8 percent, what is the NPV of the project? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) b. At a required return of 18 percent, what is the NPV of the project? (A negative answser should be indicated by a minus sign. Do not round intermediate calculations and round your answer to 2 decimal places.