On January 2, 2021. Archer Company, a skateboard manufacturer, installed a computerized machine in its factory at a cost of $163,800. The machine's useful life was estimated at four years or a total of 186,400 units with a $24,000 trade-in value. Archer Company's yeat-end is December 31 . Calculate depreciation for each year of the machine's estimated useful life under each of the following methods: (Do not round intermediate calculations.) a. Straight-line b. Double declining-balance c. Units-of-production, assuming actual units produced were: The Hilton Skating Club used straight-line depreciation for a used Zamboni ice-resurfacing machine that cost $51,500, under the assumption it would have a four-yeat life and a $6,600 trade-in value. After two years, the club determined that the Zamboni still had three more years of remaining useful life, after which it would have an estimated $4,330 trade. in value. Required: 1. Calculate the Zamboni's book value at the end of its second year. 2. Calculate the amount of depreciation to be charged during each of the remaining years in the Zamboni's revised useful life