On January 1, 2016, Verlin Co. purchased new machinery for $300,000. The machinery has an estimated useful life of ten years, and depreciation is computed by the sum-of-the-years'-digits method. 20,000 Salvage. A) The accumulated depreciation on this machinery at December 31, 2017 is __________. Please prepare/show the journal entries for 12/31/2016; 12/31/2017; and 12/31/2018.