The south wall of the campus is 72 meters long. There is a row of willow trees (both ends) under the wall. The distance between the two willow trees is 3 meters. How many willow trees are there in total?
校园南围墙长72米，围墙下有一排柳树(两端都有)，两颗柳树之间的距离是3米，一共有有柳树多少棵？
<gadget id="calculator">72 / 3</gadget>
<output>24</output>

<gadget id="calculator">24 + 1</gadget>
<output>25</output>

<result>25</result>