The school has an oval runway with a circumference of 400 meters. There is one waiter every 40 meters around the runway. How many waiters are needed in total?
学校有一个椭圆形的跑道，它的周长是400米，在跑道的周围每隔40米安排1名服务生，一共需要多少名服务生？
<gadget id="calculator">400 / 40</gadget>
<output>10</output>

<result>10</result>