On both sides of a 40-meter path between two buildings, a tree is planted every 5 meters. How many trees should be planted in total?
在两栋楼房之间的一条40米小路两侧，每隔5米种一棵树，一共要种多少棵树．
<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<result>14</result>