If a cube with side length 8cm is cut into smaller cubes with side length 4cm, how much will the surface area increase in cm**2.
把一个棱长8cm的正方体切成棱长是4cm的小正方体，表面积增加多少cm**2．
<gadget id="calculator">6 * 8 * 8</gadget>
<output>384</output>

<result>384</result>