On January 2, 2018, Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $168,200. The machines useful life was estimated at four years or a total of 189,600 units with a $26,000 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.)

1. Straight-line
2. Double-declining-balance
3. Units-of-production, assuming actual units produced were
4. Year 2018 2019 2020 2021 Units 39,000 42,200 53,300 63,000