Riverbed Corp purchased a piece of equipment for $58,000. It estimated a 8-year life and $2,320 salvage value. At the end of year 4 (before the depreciation adjustment), it estimated the new total life to be 10 years and the new salvage value to be $4,640. Compute the revised depreciation. Company uses straight-line depreciation method. (Round answer to O decimal places, e.g. 125.) Revised depreciation