Nolan Company acquired a tract of land containing a natural resource. Nolan is required by the purchase contract to restore the land after extraction. Geological surveys show that the estimated amount to be extracted will be 5,000,000 tons, and that the land will have a value of $1,000,000 after restoration. Relevant costs:Land $7,000,000Estimated restorationcosts: 1,500,000What should be the charge to depletion expense per ton of extracted material?