What am I doing wrong here? Please review?

On January 1, 2024, the Excel Delivery Company purchased a delivery van for $40,000. At the end of its five-ye life, it is estimated that the van will be worth $4,000. During the five-year period, the company expects to drive t 121,000 miles. Required: Calculate annual depreciation for the five-year life of the van using each of the following methods. 3. Units of production using miles driven as a measure of output, and the following actual mileage: Note: Do not round intermediate calculations. Round your final answers to the nearest whole dollar amount. Answer is complete but not entirely correct