Southfork Corporation acquired equipment on January 1, 20X6 for $400,000. The equipment has an estimated useful life of 10 years and an estimated salvage value of $40,000. Straight-line depreciation is used. On January 2, 20X9 Southfork Corporation revised the useful life to 12 total years (9 years remaining) and the salvage value to $22,000. What is depreciation expense for the year ending December 31, 20X9?