181. 9,1 : 7 + 2\(\dfrac{5}{6}\).

\(9.1:7=1.3=\dfrac{13}{10}\), а \(2\dfrac{5}{6}=\dfrac{17}{6}\).

\(\dfrac{13}{10}+\dfrac{17}{6}=\dfrac{39+85}{30}=\dfrac{124}{30}=\dfrac{62}{15}=4\dfrac{2}{15}\)

Ответ: \(4\dfrac{2}{15}\).