Answer
$\frac{b^3}{5a^6c^7}$
Work Step by Step
$\frac{8a^0b^4c^5}{40a^6bc^{12}}$
$=\frac{1}{5}a^{0-6}b^{4-1}c^{5-12}$
$=\frac{1}{5}a^{-6}b^{3}c^{-7}$
$=\frac{b^3}{5a^6c^7}$
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