Proposals M and N each cost $550,000, have 6-year lives, and have expected total cash flows of $750,000. Proposal M is expected to provide equal annual net cash flows of $125,000, while the net cash flows for Proposal N are as follows: Year 1 $250,000 Year 2 200,000 Year 3 150,000 Year 4 75,000 Year 5 50,000 Year 6 25,000 Determine the cash payback period for each proposal. Round your answers to three decimal places, if necessary. Proposal M years Proposal N years