On March 31, 2021. M. Belotti purchased the right to remove gravel from an old rock quarry. The gravel is to be sold as roadbed for highway construction. The cost of the quarry rights was $282.200, with estimated salable rock of 34,000 tons. During 2021, Belotti loaded and sold 4.200 tons of rock and estimated that 29,800 tons remained at December 31, 2021. At January 1, 2022. Belotti estimated that 8,400 tons still remained. During 2022, Belotti loaded and sold 12,600 tons. Belotti uses the units-of-production method. Belotti would record depletion in 2021 of. (Do not round depletion rate per ton.)