The edge length of the big cube is twice the edge length of the small cube, and how many times the surface area of the big cube is the surface area of the small cube.
大正方体棱长是小正方体棱长的2倍，大正方体表面积是小正方体表面积的多少倍．
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<result>4</result>