Ответ:
\[1.96\cdot\frac{1}{6}=\frac{1.96}{6}=0.326\overline{6}.\]
\[6.24+1.96\cdot\frac{1}{6}=6.24+0.326\overline{6}=6.566\overline{6}.\]
\[\frac{7}{18}\cdot6.566\overline{6}=\frac{7}{18}\cdot\frac{197}{30}=\frac{1379}{540}.\]
\[\frac15+\frac{1379}{540}=\frac{108}{540}+\frac{1379}{540}=\frac{1487}{540}=2\frac{407}{540}.\]
Ответ: \(\frac{1487}{540}=2\frac{407}{540}\).
