For $$42,350,000,$ Wesco Developers purchased land which their experts believe to contain $28\mathrm{.}5$ million tons of copper ore. It cost $$12,443,000$ to develop the property, whose residual value is estimated as $$5,985,000.$

Determine the current year depletion expense $($in $$)$ if annual production amounted to $4,843,000$ tons. Round depletion cost per unit to the nearest cent.