Riverbed Corp purchased a piece of equipment for $52,400. It estimated a 7-year life and $2,000 salvage value. At the end of year 3 (before the depreciation adjustment), it estimated the new total life to be 9 years and the new salvage value to be $5,500. Compute the revised depreciation. Company uses straight-line depreciation method. (Round answer to 0 decimal places, e.g. 125.) Revised depreciation $