\[\boxed{\mathbf{448.}}\]
\[40\ :2 = 20\]
\[400\ :2 = 200\]
\[60\ :3 = 20\]
\[600\ :3 = 200\]
\[80\ :2 = 40\]
\[800\ :2 = 400\]
\[90\ :3 = 30\]
\[900\ :3 = 300\]