A machine cost $880,000 on May 1, 2018. Its estimated salvage value is $80,000 and its expected life is eight years. Instructions Calculate the depreciation expense (to the nearest dollar) by each of the following methods, showing the figures used. (a) Straight-line for 2018 and 2019 (b) Double-declining balance for 2018, 2019 and 2020 (c) Sum-of-the-years'-digits for 2018, 2019 and 2020