How many small cubes of 1L cubic centimeters are needed to form a cube with side lengths of 2 cm.
用多少个1L立方厘米的小正方体，才能摆成一个棱长为2厘米的正方体．
<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>