Cut a cuboid whose length, width, and height are 5 decimeters, 3 decimeters, and 2 decimeters respectively into two small cuboids. The sum of the surface areas of the two small cuboids will increase by the maximum number of square decimeters compared with the surface area of the original cuboid.
把一个长、宽、高分别是5分米、3分米、2分米的长方体截成两个小长方体，这两个小长方体表面积之和比原长方体的表面积最多增加多少平方分米．
<gadget id="calculator">5 * 3 * 2</gadget>
<output>30</output>

<result>30</result>