Revision of depreciation

A building with a cost of $$562,500$ has an estimated residual value of $$112,500,$ has an estimated useful life of $18$ years, and is depreciated by the straight$-$line method.

a$.$ What is the amount of the annual depreciation? Do not round intermediate calculations.

b$.$ What is the book value at the end of the tenth year of use?

G

$$

c$.$ If at the start of the eleventh year it is estimated that the remaining life is $10$ years and that the residual value is $$22,500,$ what is the depreciation expense for each of the remaining $10$ years?

$$