\[\boxed{\mathbf{258.}}\]
\[153 - 53 = 100\]
\[153 - 150 = 3\]
\[153 - 103 = 50\]
\[326 - 300 = 26\]
\[326 - 2 = 324\]
\[326 - 302 = 24\]
\[518 - 18 = 500\]
\[518 - 508 = 10\]
\[518 - 108 = 410\]
\[745 - 40 = 705\]
\[745 - 740 = 5\]
\[745 - 704 = 41\]