Problem:
Simplify $\frac{\left(\left((9+12)^2+7\right)-15\right)-6}{\left(\left((14-9)^2+7\right)+21\right)^2}$.
Answer:
$\frac{427}{2809}$
{'source': 'AMPS', 'file': 'amps/mathematica/algebra/pemdas/389.txt'}