The track on the playground is 400 meters long. Xiao Ming runs 2 laps every day. How many meters does he run in a week (7 days)?
操场跑道一圈长400米，小明每天跑2圈，他一周(7天)跑了多少米？
<gadget id="calculator">400 * 2 * 7</gadget>
<output>5_600</output>

<result>5_600</result>