Mercury Inc. purchased equipment in 2019 at a cost of $183,000. The equipment was expected to produce 340,000 units over the next five years and have a residual value of $47,000. The equipment was sold for $97,600 part way through 2021. Actual production in each year was: 2019 = 49,000 units; 2020 = 78,000 units; 2021 = 39,000 units. Mercury uses units-of-production depreciation, and all depreciation has been recorded through the disposal date. Required: 1. Calculate the gain or loss on the sale. 2. Prepare the journal entry to record the sale. 3. Assuming that the equipment was instead sold for $134,600, calculate the gain or loss on the sale. 4. Prepare the journal entry to record the sale in requirement 3