$2.$ A $\backslash (7500-\backslash$mathrm$\{$m$\}^\{2\}\backslash )$ gravel parking lot is to be constructed. The parking lot is to have a uniform $\backslash (150-\backslash$mathrm$\{$mm$\}\backslash )$ layer of compacted gravel as the finished surface. The parking lot design requires line A$-$A to be at a finished elevation $($top of gravel surface$)$ of $232\mathrm{.}00$ m $.$ In order to drain, grades of $\backslash (-2\backslash \%\backslash )$ originate from line A$-$A to the east and west. The lot is divided into $\backslash (25\backslash$mathrm$\{$~m$\}\backslash$times $25\backslash$mathrm$\{$~m$\}\backslash )$ grid squares, with ground elevations determined at each corner of each grid square as shown in the diagram below.

Using grid levelling, determine the volume of cut or fill required to prepare the lot for the compacted gravel surface. Also, calculate the compacted gravel volume required for the project.