A square swimming pool, it takes 120 meters to walk around the swimming pool, and Xiao Ming walks 2 times, how many meters in total.
一个正方形游泳池，围着这个游泳池走一圈要120米，小明走了2圈，共走了多少米．
<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<result>240</result>