Metlock Corporation purchased a truck at the beginning of 2020 for $55,000. The truck is estimated to have a salvage value of $2,200 and a useful life of 176,000 miles. It was driven 25,300 miles in 2020 and 34,100 miles in 2021. Compute depreciation expense using the units-of-production method for 2020 and 2021.

Depreciation expense for 2020		$
Depreciation expense for 2021		$