Peete's Coffee and Tea purchased equipment on March 1, 2022 for $17,400. It is estimated that the equipment will have a $300 salvage value at the end of its 6 -year useful life. It is also estimated that the equipment will produce 30,000 units over its 6 -year useful life. If 4,500 units of production are produced in 2022, 4,800 units in 2023, and 5,100 units are produced in 2024, what is the book value of the equipment at December 31, 2024?