Problem #$1$: Let

$w=e^{x\frac{y}{z}},$ where $x=9s^2-4r^2,y=3r^2{s}^2,$ and $z=\frac{r}{s^2}.$

Find the value of $\frac{\text{d}\text{e}\text{l}\text{w}}{\text{d}\text{e}\text{l}\text{s}}$ when $s=1$ and $r=2.$

Problem #$1$: Enter your answer symbolically, as in these examples