Plant trees on one side of a 10-meter-long road, and plant one tree every 2 meters. If one end is planted and the other end is not planted, how many trees need to be planted?
在一条长10米的路的一边种树，每隔2米种一棵，如果一端种，一端不种，需要种多少棵．
<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<result>5</result>