Plant trees on the edge of a circular garden with a circumference of 20 meters, and plant one tree at intervals of 2 meters. How many trees are planted in total?
在周长为20米的圆形花圃边沿种树，每隔2米种一棵，共种多少棵．
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<result>10</result>