Cantaloupe Company acquired equipment on January 1, Year 1 for $570,000. Estimated useful life of the equipment was seven years and the estimated residual value was $10,000. On January 1, Year 4, after using the equipment for three years, the total estimated useful life has been revised to nine total years. Residual value remains unchanged. The company uses the straight-line method of depreciation. Calculate depreciation expense for Year 4.