WireDot Inc. is a manufacturer of specialized machinery. WireDot purchased a new stamping machine at the beginning of the year at a cost of $940,000. The estimated residual value was $77,600. Assume that the estimated useful life was five years, and the estimated productive life of the machine was 308,000 units. Actual annual production was as follows: Year Units 1 83,000 2 71,000 3 38,000 4 66,000 5 50,000 Required: 1. Complete a separate depreciation schedule for each of the alternative methods. (Do not round your intermediate calculations.) a. Straight-line. Year Depreciation Accumulated Expense Depreciation Net Book Value At acquisition 1 2 3 4 5