Xiaogang walked 2 times around a square flower bed with a side length of 2 meters, how many meters did he walk?
小刚绕边长是2米的正方形花坛走了2圈，那么他走了多少米．
<gadget id="calculator">2 * 4 * 2</gadget>
<output>16</output>

<result>16</result>