How many cubes with sides of 3 cm are needed to form a cube with sides of 9 cm.
需要多少个棱长为3厘米的正方体，才能组成一个棱长为9厘米的正方体．
<gadget id="calculator">9 / 3</gadget>
<output>3</output>

<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>