\[2\frac{10}{13} = \frac{2 \cdot 13 + 10}{13} = \frac{26 + 10}{13} = \frac{36}{13}\]
\[\frac{36}{13} : \frac{1}{26} = \frac{36}{13} \cdot \frac{26}{1} = \frac{36 \cdot 26}{13 \cdot 1} = \frac{36 \cdot 2}{1 \cdot 1} = \frac{72}{1} = 72\]
\[\frac{24}{55} : 12 = \frac{24}{55} : \frac{12}{1} = \frac{24}{55} \cdot \frac{1}{12} = \frac{24 \cdot 1}{55 \cdot 12} = \frac{2 \cdot 1}{55 \cdot 1} = \frac{2}{55}\]
\[40 : \frac{25}{24} = \frac{40}{1} : \frac{25}{24} = \frac{40}{1} \cdot \frac{24}{25} = \frac{40 \cdot 24}{1 \cdot 25} = \frac{8 \cdot 24}{1 \cdot 5} = \frac{192}{5} = 38\frac{2}{5}\]
Ответ: 1) 72; 2) $$\frac{2}{55}$$; 3) $$38\frac{2}{5}$$