حاصل عبارت ${{\mathop 8\nolimits^5 \times \mathop {16}\nolimits^{ - 3} \times \mathop 2\nolimits^{10} } \over {\mathop 4\nolimits^{ - 3} \times \mathop 2\nolimits^5 \times 32}}$ کدام است؟
$\mathop 2\nolimits^9 $
2 )
$\mathop 4\nolimits^2 $
3 )
$\mathop 2\nolimits^4 $
4 )
$\mathop 2\nolimits^7 $