48. \(\frac{3}{8} \times \frac{1}{9} : \frac{5}{16}\)

Решение:

\(\frac{3}{8} \times \frac{1}{9} \div \frac{5}{16} = \frac{3}{72} \div \frac{5}{16} = \frac{1}{24} \times \frac{16}{5} = \frac{16}{120} = \frac{2}{15}\)

Ответ: \(\frac{2}{15}\)