14 18 2 / 63 28 6 =

\( \frac{14}{63} : \frac{18}{28} : \frac{2}{6} = \frac{14}{63} \times \frac{28}{18} \times \frac{6}{2} = \frac{14 \times 28 \times 6}{63 \times 18 \times 2} = \frac{2352}{2268} = \frac{14}{13} \)

Ответ: \( \frac{14}{13} \)