On January 2, 2018, Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $163,000. The machines useful life was estimated at four years or a total of 180,000 units with a $37,000 trade-in value. Archer Companys year-end is December 31. Calculate depreciation for each year of the machines estimated useful life under each of the following methods: (Do not round intermediate calculations.) Straight-line Double-declining-balance Units-of-production, assuming actual units produced were:

Year 2018 2019 2020 2021

Units 40,100 43,850 54,400 74,000