Assume United Airlines sold one used aircraft. This aircraft was acquired on January 1, 2003 at a cost of $12,600,000. It was being depreciated using the straight-line depreciation method. At the time of purchase, it had a 12-year estimated useful life and a $4,500,000 estimated residual value. The aircraft was sold on October 31, 2005, for $10,000,000. Compute the gain or loss that resulted from this sale.