On one side of a 40-meter-long road, a tree is planted every 5 meters from the beginning to the end, how many trees can be planted in total?
在一条长40米的马路的一边，从头到尾每隔5米种一棵树，一共可以种多少棵树．
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>