(3 -3,8:5 целых 2/11 *3/17 +(18-8 2/3) :1 целых1/6

Для удобства разобьем на действия
$1)18-8\frac{2}{3}=\frac{54}{3}-\frac{26}{3}=\frac{54-26}{3}=\frac{28}{3}=9\frac{1}{3}\\\\2)3,8:5\frac{2}{11}=\frac{19}{5}:\frac{57}{11}=\frac{19}{5}*\frac{11}{57}=\frac{19*11}{5*57}=\frac{209}{285}=\frac{11}{15}\\\\3)\frac{11}{15}*\frac{3}{17}=\frac{11*3}{15*17}=\frac{11}{85}\\\\4)9\frac{1}{3}:1\frac{1}{6}=\frac{28}{3}:\frac{7}{6}=\frac{28}{3}*\frac{6}{7}=\frac{28*6}{3*7}=8\\\\5)3-\frac{11}{85}=\frac{255}{85}-\frac{11}{85}=\frac{255-11}{85}=\frac{244}{85}=2\frac{74}{85}\\\\$
$6)2\frac{74}{85}+8=\frac{244}{85}+\frac{680}{85}=\frac{244+680}{85}=\frac{924}{85}=10\frac{74}{85}$