Eight small cubes with side lengths of 1 cm can be assembled to form a large cube. If the assembled cube is larger, at least how many small cubes with a side length of 1 cm are needed.
8个棱长为1厘米的小正方体可以拼成一个大正方体．如果拼成的正方体再大一些，至少需要多少个棱长为1厘米的小正方体．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>