Rogers Company purchased a tooling machine on January 3, 2014 for $840,000. The machine was being depreciated on the straight-line method over an estimated useful life of 10 years, with no salvage value. At the beginning of 2021, the company paid $210,000 to overhaul the machine. As a result of this improvement, the company estimated that the useful life of the machine would be extended an additional 5 years (15 years total). What should be the depreciation expense recorded for the machine in 2021?