If $A$ and $B$ are $2 \times 2$ matrices, $\det (A)=1$, $\det (B)=-8$, then
$\det (AB) =$ ,
$\det (3 A) =$ ,
$\det (A^{T}) =$ ,
$\det (B^{-1}) =$ ,
$\det (B^3) =$ .