Bonita Corporation purchased a truck at the beginning of 2017 for $60,500. The truck is estimated to have a salvage value of $2,420 and a useful life of 193,600 miles. It was driven 27,830 miles in 2017 and 37,510 miles in 2018. Compute depreciation expense for 2017 and 2018. Depreciation expense for 2017 $ Depreciation expense for 2018 $