Sandhill uses the units-of-production method to calculate depreciation on its taxicabs. Each cab is expected to be driven 303,300 km over its life. Taxi 10 was purchased on March 1, 2020, for $30,780 and is expected to have a residual value of $450. Taxi 10 was driven 127,550 km in 2020 and 100,350 km in 2021. Sandhill has a December 31 year end. Calculate the depreciation expense on Taxi 10 for 2020 and 2021. Year Depreciation expense 2020 $ 2021 $