On January 2, year 1, Montague Co. purchased a machine for $264,000 and depreciated it by the straight line method using an estimated useful life of 8 years with no salvage value. On January 2, year 4, Montague determined that the machine had a useful life of 6 years from the date of acquisition and will have a salvage value of $24,000. An accounting change was made in Year 4 to reflect the additional information. Calculate the accumulated depreciation for this machine at December 31, year 4. Show all calculations.