From station $3+203\mathrm{.}0$ with center height of $2\mathrm{.}2$ m in fill, the ground line makes a uniform slope of $5\mathrm{.}1\%$ to station $3+256\mathrm{.}8$ whose center heights is $1\mathrm{.}0$ m in cut. Determine the volume $($use End$-$Area Method$)$ of materials needed for backfill in cubic meters if the width of roadway is $9$ m and side slope of $1$:$1.(2$ decimal places$)$