On January 2, 2021, Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $170,600. The machines useful life was estimated at four years or a total of 179,500 units with a $27,000 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		2021		2022		2023		2024
Units		39,100		42,350		53,400		64,000