Ответ:
\[\frac{5}{16} : \frac{1}{8}=\frac{5}{16}\cdot 8=\frac{5}{2}=2\frac{1}{2}.\]
\[1\frac{57}{125}=\frac{182}{125},\qquad \frac{182}{125}:\frac{7}{25}=\frac{182}{125}\cdot\frac{25}{7}=\frac{26}{5}=5\frac{1}{5}.\]
\[4\frac{1}{2}\cdot\frac{4}{5}=\frac{9}{2}\cdot\frac{4}{5}=\frac{18}{5}=3\frac{3}{5}.\]
\[2\frac{1}{2}+5\frac{1}{5}+3\frac{3}{5}=11\frac{3}{10}.\]
Ответ: \(11\frac{3}{10}\).
