Gunkelson Company sells equipment on September 30, 2022, for $18,000 cash. The equipment originally cost $72,000 and as of January l , 2022, had accumulated depreciation of $42,000. Depreciation for the first 9 months of 2022 is $5,250. Prepare the journal entries to (a) update depreciation to September 30, 2022, and (b) record the sale of the equipment.