How many square decimeters of cardboard should be used to make a cube carton with a side length of 8 decimeters?
做一个棱长8分米的正方体纸盒，至少要用多少平方分米硬纸板？
<gadget id="calculator">8 * 8 * 6</gadget>
<output>384</output>

<result>384</result>