The circumference of a swimming pool is 300 meters, and a chair is placed every 10 meters along the edge of the pool, how many chairs can be placed in total.
一个游泳池的周长为300米，沿池边每隔10米放一把椅子，一共可以放多少把椅子．
<gadget id="calculator">300 / 10</gadget>
<output>30</output>

<result>30</result>