Assume a piece of equipment was purchased July 26, 2016, at a cost of $67,800. The estimated residual value is $4,800 with a useful life of 5 years. Assume a production life of 54,000 units. a. Compute the depreciation for years 2016 and 2017 using straight-line. (Do not round intermediate calculations.) Depreciation expense 2016 2017 b. Compute the depreciation for years 2016 and 2017 using units-of-production (in 2016, 4,400 units were produced and in 2017, 17,400 units were produced). (Do not round intermediate calculations. Round your answers to the nearest cent.) Depreciation expense 2016 2017