\[\boxed{\mathbf{368.}}\]
\[300 - 2 = 298\]
\[300 - 12 = 288\]
\[300 - 112 = 188\]
\[400 - 4 = 396\]
\[400 - 24 = 376\]
\[400 - 124 = 276\]
\[600 - 3 = 597\]
\[600 - 53 = 547\]
\[600 - 253 = 347\]
\[800 - 7 = 793\]
\[800 - 37 = 763\]
\[800 - 737 = 63\]