The school runway is 400 meters long. Xiaopang ran 6 laps and Xiaoqiao ran 4 laps. How many meters did they run in total?
学校跑道长400米，小胖跑了6圈，小巧跑了4圈，他们一共跑了多少米？
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">10 * 400</gadget>
<output>4_000</output>

<result>4_000</result>