The given expression is $\frac{36 y^{3} z^{8}}{54 y^{2} z^{9}}$. We can factorize 36 as $2^2 \times 3^2$, 54 as $2 \times 3^3$, $y^3$ as $y \times y \times y$, $y^2$ as $y \times y$, $z^8$ as $z \times z \times z \times z \times z \times z \times z \times z$, and
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