Can someone please check my work? Thank you!

Copy equipment was acquired at the beginning of the year at a cost of $26,320 that has an estimated residual value of $2,400 and an estimated useful life of 5 years. It is estimated that the machine will output an estimated 1,196,000 copies. This year, 258,000 copies were made, a. Determine the depreciable cost. 23,920 b. Determine the depreciation rate. Round your answer to two decimal places. 20 per copy c. Determine the units-of-output depreciation for the year 5,160