\[\boxed{\mathbf{464.}}\]
\[120\ :4 = 30\]
\[140\ :7 = 20\]
\[180\ :3 = 60\]
\[240\ :3 = 80\]
\[270\ :9 = 30\]
\[280\ :7 = 40\]
\[350\ :5 = 70\]
\[320\ :8 = 40\]
\[420\ :6 = 70\]
\[540\ :6 = 90\]
\[630\ :9 = 70\]
\[720\ :8 = 90\]