Grouper Taxi Service uses the units$-$of$-$activity method in computing depreciation on its taxicabs. Each cab is expected to be driven $142\mathrm{.}000$ miles. Taxi no$.10$ cost $$44,100$ and is expected to have a salvage value of $$1,500.$ Taxi no$.10$ was driven $35,800$ miles in $2022$ and $18\mathrm{.}300$ miles in $2023.$

$($a$1)$

Calculate depreciation cost per mile using unit$-$of$-$activity method. $($Round answer to $2$ decimal places, eg $0\mathrm{.}50.)$

Depreciation cost per mile