If a cuboid with a length of 15 decimeters, a width of 8 decimeters and a height of 12 decimeters is cut into three identical small cuboids, how much square decimeters can its surface area increase at least?
把一个长15分米，宽8分米，高12分米的长方体截成3个相同的小长方体，它的表面积最少可以增加多少平方分米？
<gadget id="calculator">12 * 8 * 4</gadget>
<output>384</output>

<result>384</result>