RJ purchased a tooling machine for $$17000$ on January $1$ of Year $1.$ The machine was being depreciated using the straight$-$line method over an estimated useful life of $14$ years, with no salvage value. On July $1$ of the $6$th year, the company estimated that the useful life of the machine would be extended by an additional $3$ years beyond its original estimated life and that the salvage value is expected to be $$3800.$ What is the depreciation expense for the above machine for the $6$th year?