Shamrock Company purchased machinery for $176,400 on January 1, 2017. It is estimated that the machinery will have a useful life of 20 years, salvage value of $14,700, production of 88.600 units, and working hours of 38,100. During 2017, the company uses the machinery for 13,716 hours, and the machinery produces 18,606 units. Compute depreciation under the straight-line, units- of-output, working hours, sum-of-the-years-digits, and double-declining-balance methods. (Round intermedlate calculations to 5 decimal places, e.g. 1.56487 and final answers to o decimal places, e.g. 5,125.) Straight-line Working hours Sum-of-the-years-digits $