Innovation Middle School has a 400-meter-long circular plastic runway. Magnolia trees are planted every 10 meters around the runway. There is a small flower bed between adjacent magnolia trees. How many small flower beds are there around the runway?
创新中学有一条400米长的圆形塑料跑道，跑道四周每隔10米种一棵玉兰树，相邻的玉兰树中间有一个小花坛，跑道周围一共有多少个小花坛？
<gadget id="calculator">400 / 10</gadget>
<output>40</output>

<result>40</result>