Решение:
1) \(\frac{15}{28} \cdot 1\frac{1}{6} = \frac{15}{28} \cdot \frac{7}{6} = \frac{15 \cdot 7}{28 \cdot 6} = \frac{5 \cdot 1}{4 \cdot 2} = \frac{5}{8}\)
2) 3 - \(\frac{5}{8}\) = \(\frac{24}{8}\) - \(\frac{5}{8}\) = \(\frac{19}{8}\)
3) \(\frac{19}{8} \cdot 2\frac{2}{19} = \frac{19}{8} \cdot \frac{40}{19} = \frac{19 \cdot 40}{8 \cdot 19} = \frac{1 \cdot 5}{1 \cdot 1} = 5\)
Ответ: 5