Around a circular garden with a circumference of 42 meters, if there are potted flowers every 2 meters, how many potted flowers can be placed in total?
在一个周长是42米的圆形花园周围，每隔2米放一盆花，一共可放多少盆花？
<gadget id="calculator">42 / 2</gadget>
<output>21</output>

<result>21</result>