For each of the following pairs of groups $G_1, G_2$, determine the number of elements in the direct product $G_1\times G_2$ of the given order ($D_{5}$ is the dihedral group of order $10$).

$G_1$	$G_2$	$k$	number of elements in $G_1 \times G_2$ of order $k$
$\mathbb{Z}_{14}$	$\mathbb{Z}_{8}$	$4$
$U(14)$	$U(24)$	$6$
$D_{5}$	$Q_8$	$4$