Could you please explain explain the solution of this question 9-4A . I am stuck in this question for awhile now and I I would appreciate it , if you include the process of solution.

2021 Year ........ 2018 2019 2020 Units ........". 39,900 43,550 54,200 72,000 Problem 9-4A Calculating depreciation-partial periods LO2, 3 CHECK FIGURES: 1B. 2022 Depreciation expense = $39,000; 2A. 2022 Depreciation expense = $59,760 Yorkton Company purchased for $415,000 equipment having an estimated useful life of 10 years with an estimated residual value of $25,000. Depreciation is calculated to the nearest month. The company has a December 31 year-end. Required Complete the following schedules (round calculations to the nearest whole dollar): 1. Assuming the purchase was made on January 1, 2020. 2. Assuming the purchase was made on July 1, 2020. 2020 2021 2022 A. Double-declining-balance method Equipment ....... Less: Accumulated depreciation .............. Year-end book value..... . ...... Depreciation expense for the year ..........................." B. Straight-line method.. Equipment ........ Less: Accumulated depreciation .............................." Year-end book value....... Depreciation expense for the year ......................!" oblem 9-5A Calculating depreciation-part I period