Exercise 9-5 Cullumber Company purchased a new machine on October 1, 2017, at a cost of $90,400. The company estimated that the machine has a salvage value of $7,760. The machine is expected to be used for 71,800 working hours during its 8-year life Compute the depreciation expense under the straight-line method for 2017 and 2018, assuming a December 31 year-end. (Round answers to 0 decimal places, e.g 5,275.) 2017 2018 The depreciation expense under the straight-line method s