How many such cubes should be used to form a slightly larger cube with a side length of 1 cm?
用棱长1厘米的正方体摆成一个稍大一些的正方体，至少要用多少个这样的正方体．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>