A machine can be purchased for $300,000 and used for five years, yielding the following net incomes. In projecting net incomes, double-declining depreciation is applied, using a five-year life and a zero salvage value. Year 1 Year 2 Year 3 Year 4 Year 5 Net income $ 20,000 $ 41,000 $ 51,000 $ 57,500 $ 124,000 Compute the machines payback period (ignore taxes). (Round payback period answer to 3 decimal places.)