Ответ:
\[32\frac57-12\frac27=20\frac37=\frac{143}{7}.\]
\[25{,}7+18{,}4=44{,}1=\frac{441}{10}.\]
\[\frac{143}{7}\cdot\frac{441}{10}=143\cdot\frac{63}{10}=900{,}9.\]
Ответ: 900,9.
\[32\frac57-12\frac27=20\frac37=\frac{143}{7}.\]
\[25{,}7+18{,}4=44{,}1=\frac{441}{10}.\]
\[\frac{143}{7}\cdot\frac{441}{10}=143\cdot\frac{63}{10}=900{,}9.\]
Ответ: 900,9.