Salish Software Solutions used the straight$-$line method to determine depreciation expense for all fixed assets.

None of the assets purchased prior to $\frac{12}{31}$ were fully depreciated. Monthly depreciation expense for the assets purchased prior to $\frac{12}{31}$ is $$223\mathrm{.}50($Computer $$166\mathrm{.}00,$ Printer $$37\mathrm{.}50,$ and furniture $$20).$