\[\boxed{\text{6.294.}}\]
\[\textbf{а)}\ 60,918\ :156 = 0,3905\ \]
\[\textbf{б)}\ 74,052\ :264 = 0,2805\]
\[\textbf{в)}\ 1,51515\ :15 = 0,10101\]
\[\textbf{г)}\ 1,919\ :19 = 0,101\ \]