Concord Corporation purchased a piece of equipment for $57,100. It estimated a 7-year life and $2,900 salvage value. At the end of year 4 (before the depreciation adjustment), it estimated the new total life to be 9 years and the new salvage value to be $5,600. Compute the revised depreciation. Company uses straight-line depreciation method. (Round answer to 0 decimal places, e.g. 125.)

What is the revised depreciation?

Please show work.