Xiaohong runs 3 laps around the 400-meter playground every day. How many meters can she run in a week?
小红每天绕400米的操场跑3圈，一个星期一共能跑多少米？
<gadget id="calculator">400 * 3 * 7</gadget>
<output>8_400</output>

<result>8_400</result>