On April 17, 2018, the Loadstone Mining Company purchased the rights to a coal mine. The purchase price plus additional costs necessary to prepare the mine for extraction of the coal totaled $5,460,000. The company expects to extract 910,000 tons of coal during a four-year period. During 2018, 241,000 tons were extracted and sold immediately. Required: 1. Calculate depletion for 2018.