On January 1, 2019 purchased a computer system that cost $1,480,000. The estimated useful life of the computer is 3 years and salvage value is $40,000. Straight-line depreciation is to be used. On January 1, 2020 the company determined that the estimated useful life of the computer would be 4 years instead of 3 years. The estimated salvage value will only be $10,000.