(NPV calculation) Calculate the NPV given the following free cash flows, if the appropriate required rate of return is 15 percent. Should the project be accepted? C ce (Click on the following icon in order to copy its contents into a spreadsheet.) CASH FLOWS - $80,000 YEAR 0 1 2 3 4 56 20,000 20,000 20,000 - 20,000 20,000 20,000