On January 2, 2018, Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $179,200. The machines useful life was estimated at four years or a total of 186,500 units with a $30,000 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 39,400 42,800 53,700 67,000