Plant trees on an 8-meter-long path (both ends are planted), and plant 1 tree every 2 meters. How many trees can be planted in total?
在一条8米长的小路上植树(两端都植)，每隔2米植树1棵，一共可以植树多少棵．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>