i cant figure out the last 3 for 2020

thank you

Whippet Bus Lines uses the units-of-activity method in depreciating its buses. One bus was purchased on January 1,2017, at a cost of $128,000. Over its 4-year useful life, the bus is expected to be driven 213,750 miles. Salvage value is expected to be $8,300. E Your answer is partially correct. Prepare a depreciation schedule assuming actual mileage was: 2017,51,200;2018,66,560,2019,52,480; and 2020, 34,560. (Round depreciation cost per unit to 3 decimal ploces, e.g. 0.125 and other answers to 0 decimal places, e.8. 125) Prepare a depreciation schedule assuming actual mileage was: 2017,51,200;2018,66,560;2019,52,480; and 2020,34,560. (Round depreciation cost per unit to 3 decimal places, e.8. 0.125 and other answers to 0 decimal places, e.8. 125)