Please help me out with the practice questions

Problem 8-2A (Algo) Depreciation methods LO P1 A machine costing $213,800 with a four-year life and an estimated $17,000 salvage value is installed in Luther Company's factory on January 1. The factory manager estimates the machine will produce 492,000 units of product during its life. It actually produces the following units: 121,500 in Year 1, 124,100 in Year 2,121,400 in Year 3, 135,000 in Year 4. The total number of units produced by the end of Year 4 exceeds the original estimate-this difference was not predicted. Note: The machine cannot be depreciated below its estimated salvage value. Required: Compute depreciation for each year (and total depreciation of all years combined) for the machine under each depreciation method. Note: Round your per unit depreciation to 2 decimal places. Round your answers to the nearest whole dollar. Exercise 8-18 (Algo) Partial-year depreciation; disposal of plant asset LO P2 Rayya Company purchases a machine for $176,400 on January 1,2021. Straight-line depreciation is taken each year for four years assuming a seven-year life and no salvage value. The machine is sold on July 1,2025 , during its fifth year of service. Prepare entries to record the partial year's depreciation on July 1, 2025, and to record the sale under each separate situation. (1) The machine is sold for $75,600 cash. (2) The machine is sold for $60,480 cash