On June 16, 2015, Davis Corporation, a calendar year taxpayer, purchased an office building for $3,650,000 of which $400,000 was allocable to the land. On November 15, 2015, Davis also purchased equipment (7-year property) for $74,500 and computers (5-year property) for $23,600, which were its only purchases of depreciable personal property during 2015. Davis Corporation sold the office building on February 24, 2019. It also sold the equipment on January 20, 2019 and the computers on November 28, 2019 due to financial problems. Compute Davis Corporations allowable depreciation for the office building, the equipment, and the computers both for the year of purchase (2015) and the year of sale (2019) assuming that Davis did not elect expensing or bonus depreciation for any of these assets.