И) \(\frac\){-3\(\frac{1}{3}\)\(\cdot\)\(\left\)\(-2\frac{4}{15}\right\):\(\frac{-6,8}{0,9}\)-1\(\frac{7}{9}\)\(\cdot\)(-0,75):\(\left\)\(-\frac{1}{6}\right\)}{-8\(\frac{1}{3}\)\(\cdot\)16,2:(-22,5)}

Вычислим числитель:

\[-3\frac{1}{3}\cdot\left(-2\frac{4}{15}\right):\frac{-6.8}{0.9}=\frac{-10}{3}\cdot\frac{-34}{15}:\frac{-68}{9}=-1.\]

\[1\frac{7}{9}\cdot(-0.75):\left(-\frac{1}{6}\right)=\frac{16}{9}\cdot\left(-\frac34\right):\left(-\frac16\right)=8.\]

\[-1-8=-9.\]

Вычислим знаменатель:

\[-8\frac{1}{3}\cdot16.2:(-22.5)=\left(-\frac{25}{3}\right)\cdot\frac{81}{5}:\left(-\frac{45}{2}\right)=6.\]

\[-9:6=-\frac{3}{2}.\]

Ответ: \(-\frac{3}{2}\).