How many square centimeters will the surface area be reduced by using three cubes whose sides are all 8 centimeters long to form a cuboid?
用3个棱长都是8厘米的正方体拼成一个长方体，表面积减少多少平方厘米？
<gadget id="calculator">8 * 8 * 4</gadget>
<output>256</output>

<result>256</result>