In 1998 , Nash Company completed the construction of a building at a cost of $4,080,000 and first occupied it in January 1999. It was estimated that the building will have a useful life of 40 years and a salvage value of $201,200 at the end of that time. Early in 2007, an addition to the building was constructed at a cost of $1,530,000. At that time it was estimated that the remaining life of the building would be, as originally estimated, an additional 32 years, and that the addition would have a life of 32 years, and a salvage value of $19,600. In 2027, it is determined that the probable life of the building and addition will extend to the end of 2048 or 10 years beyond the original estimate. (a) Using the straight-line method, compute the annual depreciation that would have been charged from 1999 through 2006. Annual depreciation from 1999 through 2006 / yr