M9-5 Computing Book Value (Units-of-Production Depreciation) [LO 9-3) A machine that cost $144,000 has an estimated residual value of $12.000 and an estimated useful life of 12,000 machine hours. The company uses units-of-production depreciation and ran the machine 2.000 hours in year 1,3,000 hours in year 2, and 4,000 hours in year 3 Calculate its book value at the end of year 3. (Do not round intermediate calculations.) Value