In 1998, Sheffield Company completed the construction of a building at a cost of $2,340,000 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 $69,600 at the end of that time. Early in 2009, an addition to the building was constructed at a cost of $585,000. At that time, it was estimated that the remaining life of the building would be, as originally estimated, an additional 30 years, and that the addition would have a life of 30 years and a salvage value of $23,400. In 2027, it is determined that the probable life of the building and addition will extend to the end of 2058, or 20 years beyond the original estimate. (a) Using the straight-line method, compute the annual depreciation that would have been charged from 1999 through 2008 Annual depreciation from 1999 through 2008 $ /yr.