\[6\frac{3}{7}\ :\frac{9}{14} - 1\frac{1}{19} \cdot \left( 3,2 - 2\frac{1}{4} \right) =\]
\[= \frac{45}{7} \cdot \frac{14}{9} - \frac{20}{19} \cdot \left( \frac{16^{\backslash 4}}{5} - \frac{9^{\backslash 5}}{4} \right) =\]
\[= 5 \cdot 2 - \frac{20}{19} \cdot \frac{64 - 45}{20} =\]
\[= 10 - \frac{20}{19} \cdot \frac{19}{20} = 10 - 1 = 9.\]