\[\boxed{\text{272\ (272).\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[1)\ \frac{3^{10} \cdot 27^{3}}{9^{9}} = \frac{3^{10} \cdot \left( 3^{3} \right)^{3}}{\left( 3^{2} \right)^{9}} =\]
\[= \frac{3^{10} \cdot 3^{9}}{3^{18}} = \frac{3^{19}}{3^{18}} = 3\]
\[2)\ \left( 5\frac{1}{3} \right)^{7} \cdot \left( \frac{3}{16} \right)^{8} =\]
\[= \left( \frac{16}{3} \right)^{7} \cdot \left( \frac{3}{16} \right)^{8} =\]
\[= \frac{16^{7} \cdot 3^{8}}{3^{7} \cdot 16^{8}} = \frac{3}{16}\]