The circumference of a circular flower bed is 30 meters, and there are potted flowers every 3 meters on its side, how many potted flowers are needed in total.
一个圆形花坛的周长是30米，在它的边上每隔3米摆一盆花，一共需要多少盆花．
<gadget id="calculator">30 / 3</gadget>
<output>10</output>

<result>10</result>