On January 1, 2016, Wasson Company purchased a delivery vehicle costing $28,960. The vehicle has an estimated 6-year life and a $3,200 residual value. Wasson uses the units-of-production depreciation method and Wasson estimates that the vehicle will be driven 92,000 miles. What is the vehicle's book value as of December 31, 2017 assuming Wasson uses the units-of-production depreciation method and the vehicle was driven 11,800 miles during 2016 and 19,800 miles during 2017? (Do not round your intermediate calculations.)