Simplify:

$\displaystyle \frac{{\left({4}{a}^{{-{{4}}}}{b}^{{-{{4}}}}\right)}^{{-{{1}}}}}{{{4}{a}{b}^{{-{{4}}}}{c}^{{0}}}}$

Entry Tips:

1. Use ^ (shift+6) for exponents. To type $\displaystyle {x}^{{2}}$ type "x^2"

2. Use parenthesis if there is more than one "thing" in the numerator or denominator. To type $\displaystyle \frac{{{2}{a}}}{{{c}-{4}}}$ type "(2a)/(c-4)".