How many identical small cubes are needed to assemble a large cube with small cubes of 1 cubic centimeter.
用1立方厘米的小正方体拼一个大正方体，至少需要多少个相同的小正方体．
<gadget id="calculator">1 * 1 * 1</gadget>
<output>1</output>

<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">2 * 2 * 2</gadget>
<output>8</output>

<result>8</result>