Evaluate piecewise functions

$h(x) = \begin{cases} x^3& , & x\in (-\infty,0] \\\\ \dfrac{24}{x}-1 & , & x \in (0,8]\\\\ (x-1)(x+3) & , & x \in (8,\infty)\end{cases}$ $h(-3)=$ [[☃ numeric-input 1]]