Carla Vista Electronics purchased packaging equipment for $576,000 cash on July 1, 2022. Management estimates the equipment can package 768,000 inventory units and will be productive for 5 years. Its salvage value is estimated at $48,000. During 2022, the equipment packaged 124,800 units, with another 134,400 units in 2022. Compute the annual depreciation expense for 2022 and 2023, and book value at December 31, 2023, under the straight-line method. 2022 depreciation 2023 depreciation December 31, 2023 book value $