A small court is 25 meters long and 20 meters wide. Xiao Ming walks 2 laps along the court, how many meters did he walk in total?
一个小型球场长25米，宽20米，小明沿球场走2圈，一共走了多少米．
<gadget id="calculator">25 + 20</gadget>
<output>45</output>

<gadget id="calculator">45 * 2 * 2</gadget>
<output>180</output>

<result>180</result>