An asset was acquired on October 1, 2018, for $78,000 with an estimated 5-year life and $13,000 residual value. The company uses units-of-production depreciation and expects the asset to produce 20,000 units. Calculate the gain or loss if the asset was sold on March 31, 2021, for $58,000. Actual production was: 2018=500 units; 2019=3,000 units; 2020=3,500 units; 2021=1,000 units.

can you provide a solution for this? thank you!