Flint Mining Co$.$ purchased for $$14,620,500$ a mine that is estimated to have $54,150,000$ tons of ore and no salvage value. In the first year, $12,040,000$ tons of ore are extracted. $($a$1)$ Calculate depletion cost per unit. $($Round answer to $2$ decimal places, e$.$g$.0\mathrm{.}50.)$ Depletion cost per unit $