Ответ:

  1. \(8\cdot\frac{5}{49}=\frac{40}{49}\).
  2. \(\frac{19}{24}\cdot6=\frac{19}{4}\).
  3. \(\frac{9}{22}\cdot44=9\cdot2=18\).

Ответ: 1) \(\frac{40}{49}\); 2) \(\frac{19}{4}\); 3) \(18\).