In $1998,$ windsor companycompleted the construction of a building at cost of $$4,320,000$ and first occupied it in January $1999.$ It was estimated that the building will have a useful life of $40$ years and a salvage value of $$204,800$ at the end of that time.

Early in $2007,$ an addition to the building was constructed at a cost of $$1,620,000.$ 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 $$20,000.$

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 $2006\frac{\text{\$}}{y}r.$