9. Find the product or quotient. (28z^9)/(7z^6)div (16z)/(14z^6) (28z^9)/(7z^6)div (16z)/(14z^6)= or fractions for any numbers in the expressior

To solve the expression, we need to simplify the fractions and then divide them.<br /><br />Step 1: Simplify the fractions<br />$\frac {28z^{9}}{7z^{6}} = \frac {4z^{3}}{1}$<br />$\frac {16z}{14z^{6}} = \frac {8}{7z^{5}}$<br /><br />Step 2: Divide the simplified fractions<br />$\frac {4z^{3}}{1} \div \frac {8}{7z^{5}} = \frac {4z^{3}}{1} \times \frac {7z^{5}}{8} = \frac {28z^{8}}{8} = \frac {7z^{8}}{2}$<br /><br />Therefore, the simplified expression is $\frac {7z^{8}}{2}$.