\[\boxed{\mathbf{386\ (386).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 6\% = \frac{6}{100} = \frac{3}{50}\]
\[2)\ 36\% = \frac{36}{100} = \frac{9}{25}\]
\[3)\ 80\% = \frac{80}{100} = \frac{8}{10} = \frac{4}{5}\]
\[4)\ 140\% = \frac{140}{100} = \frac{14}{10} = \frac{7}{5} = 1\frac{2}{5}\]