Найдите частное: 1) \(6:\frac{2}{7}\); 2) \(1:\frac{8}{19}\); 3) \(\frac{7}{25}:28\).

1. \(6:\frac{2}{7}=6\cdot\frac{7}{2}=21\).
2. \(1:\frac{8}{19}=1\cdot\frac{19}{8}=\frac{19}{8}\).
3. \(\frac{7}{25}:28=\frac{7}{25}\cdot\frac{1}{28}=\frac{1}{100}\).

Ответ: 1) \(21\); 2) \(\frac{19}{8}\); 3) \(\frac{1}{100}\).