$[-/2$ Points$]$ SCALCET$87\mathrm{.}8\mathrm{.}534.$XP$.$

Determine whether the integral is convergent or divergent.

${\displaystyle \underset{-}{\overset{20}{}}}r{e}^{\frac{r}{4}}dr$

convergent

divergent

If it is convergent, evaluate it$.($If the quantity diverges, enter DIVERGES.$)$

$$

$$