How do you solve this problem, I am not understanding how to get the depreciable cost per unit?

Carla Vista Taxi Service uses the units-of-activity method in computing depreciation on its taxicabs. Each cab is expected to be driven 166,000 miles. Taxi 10 cost $33,500 and is expected to have a salvage value of $300. Taxi 10 was driven 34.000 miles in 2021 and 34.600 miles in 2022. (a) X Your answer is incorrect. Determine the depreciation cost. (Round answer to 2 decimal places, e.g. 1.25.) $ Depreciable cost 6800.00 per unit