9. (5 points) As shown in the figure, a cubic wooden block with an edge length of 1 meter is sawed 1, 2, and 3 times along the length, width, and height directions, respectively, resulting in 24 rectangular wooden blocks. The sum of the surface areas of these 24 rectangular wooden blocks is $\qquad$ square meters.
【Solution】Solution: $1^{2} \times 6+(2+4+6) \times 1^{2}$
$$
\begin{array}{l}
=6+12 \\
=18\left(\mathrm{~m}^{2}\right) .
\end{array}
$$

Therefore, the answer is: 18 .