In the 2010 Guangzhou Asian Games, how many colored flags are needed to place colored flags on the edge of a 400-meter circular runway in a competition venue, with a colored flag every 4 meters?
在2010年广州亚运会上，要为一个比赛场馆400米的环形跑道边上插彩旗，每隔4米插一面彩旗，需要彩旗多少面？
<gadget id="calculator">400 / 4</gadget>
<output>100</output>

<result>100</result>