At least how many small cubes with sides 1 cm long are needed to form a large cube with sides 4 cm long.
要拼成一个棱长4厘米的大正方体至少需要多少个棱长1厘米的小正方体木块．
<gadget id="calculator">4 * 4 * 4</gadget>
<output>64</output>

<result>64</result>