Rose Corp. acquired a new office machine on January $1,2016,$ for $$100,000.$ The machine has a $20-$year useful life and a $$20,000$ estimated salvage value. On August $1,2020,$ it is estimated that the remaining useful life of the machine will be $6$ years and that the salvage value will be zero at the end of its useful life. Rose Corp. uses the straight$-$line method for depreciation. What is the depreciation expense for $2020?$