How many small cubes are needed to form a large cube with a side length of 9 cm from small cubes with a side length of 3 cm?
用棱长3cm的小正方体木块拼成一个棱长9cm的大正方体，至少需要多少个小正方体．
<gadget id="calculator">3 * 3 * 3</gadget>
<output>27</output>

<result>27</result>