The distance between the two buildings is 168 meters. The management office will plant trees on one side of the path between the two buildings. The distance between two adjacent trees is 6 meters. How many trees will be planted in total?
两座大楼之间相距168米，管理处要在两座楼房之间的小路的一边栽树，相邻两棵树之间的距离是6米．一共要栽多少棵树？
<gadget id="calculator">168 / 6</gadget>
<output>28</output>

<gadget id="calculator">28 - 1</gadget>
<output>27</output>

<result>27</result>