The school holds a sports meeting, and puts colorful flags on a circular runway with a circumference of 400 meters, and inserts one every 25 meters. How many colored flags are needed in total.
学校举行运动会，在周长为400米环形跑道插彩旗，每隔25米插一面，共需要彩旗多少面．
<gadget id="calculator">400 / 25</gadget>
<output>16</output>

<result>16</result>