On one side of a road with a length of 240 meters, a tree is planted every 8 meters (both ends are planted), how many trees are planted in total?
在一条长240米的公路一侧，每隔8米栽一棵树(两端都栽)，一共栽多少棵．
<gadget id="calculator">240 / 8</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<result>31</result>