Ответ:

б) \(6\frac{2}{3}:1\frac{1}{8}=\frac{20}{3}:\frac{9}{8}=\frac{20}{3}\cdot\frac{8}{9}=\frac{160}{27}=5\frac{25}{27}\).

е) \(57:\frac{19}{24}=57\cdot\frac{24}{19}=3\cdot24=72\).

к) \(\frac{36}{47}:18=\frac{36}{47}\cdot\frac{1}{18}=\frac{2}{47}\).

Ответ: б) \(5\frac{25}{27}\); е) \(72\); к) \(\frac{2}{47}\).