Bob's Construction Company sold a bobcat $($equipment$)$ to another construction company for $$81,000$ cash on January $1,2019.$ The bobcat was originally purchased on January $1,2017$ for $$200,000$ and had an expected useful life of $7$ years with no salvage value. Under the straight line depreciation method, what is the loss on the sale of the equipment on January $1,2019?$ Assume that depreciation has been recorded through December $31,2018$ and enter a positive number for the loss.