\[\boxed{\mathbf{2.}\mathbf{317}}\]
\[1)\ \frac{14}{25} \cdot \frac{3}{4} = \frac{21}{50} = \frac{42}{100} = 0,42\ (т).\]
\[2)\ \frac{14}{25} \cdot \frac{5}{7} = \frac{2}{5} = 0,4\ (т).\]
\[3)\frac{14}{25} \cdot 1\frac{1}{4} = \frac{14}{25} \cdot \frac{5}{4} = \frac{7}{10} =\]
\[= 0,7\ (т).\]