\[\left( 4\frac{5^{\backslash 2}}{6} - 1\frac{5}{12} \right) \cdot \frac{30}{41} =\]
\[= \left( 4\frac{10}{12} - 1\frac{5}{12} \right) \cdot \frac{30}{41} = 3\frac{5}{12} \cdot \frac{30}{41} =\]
\[= \frac{41}{12} \cdot \frac{30}{41} = \frac{15}{6} = 2\frac{3}{6} = 2,5.\]