Xiaohong insists on running and exercising, running two laps every day. The runway is 400 meters per lap, how many meters does she run in a week?
小红坚持跑步锻炼，每天跑两圈．跑道每圈400米，她一个星期跑多少米？
<gadget id="calculator">400 * 2 * 7</gadget>
<output>5_600</output>

<result>5_600</result>