Answer
$... =\displaystyle \frac{1}{12}\cdot\frac{1}{12}\cdot\frac{1}{12}\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12=12^{4}=12^{-3+7}$
Work Step by Step
$12^{-3}\displaystyle \cdot 12^{7}=\frac{1}{12}\cdot\frac{1}{12}\cdot\frac{1}{12}\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12\cdot 12$
$=12^{4}$
$=12^{-3+7}$
