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

<result>5_600</result>