A machine can be purchased for $170,000 and used for five years, yielding the following net incomes. In projecting net incomes, straight-line depreciation is applied, using a five-year life and a zero salvage value. Year 1 $11,400 Year 2 $28,400 Year 3 $ 64,000 Year 4 $42,700 Year 5 $113,600 Net income Compute the machine's payback period (ignore taxes). (Round your intermediate calculations to 3 decimal places and round payback period answer to 3 decimal places.) Year Net Income Depreciation Net Cash Flow Cumulative Cash Flow (170,000) $ (170,000) $ 11,400 28,400 64,000 42,700 113,600 Payback period =