The square runway is 400 meters per lap. Xiaoqiang insists on running two laps every day. How many meters did he run in a week?
广场跑道每圈400米，小强每天坚持跑两圈，他一个星期共跑了多少米？
<gadget id="calculator">400 * 2 * 7</gadget>
<output>5_600</output>

<result>5_600</result>