Plant trees on both sides of a 250-meter-long road. Plant trees at both the start and end points. A total of 102 trees are planted. The distance between every two adjacent trees is the same. Do you know how many meters it is?
在一条长250米的路两旁栽树，起点和终点都栽，一共栽了102棵，每两棵相邻的树之间的距离都相等，你知道是多少米吗？
<gadget id="calculator">102 / 2</gadget>
<output>51</output>

<gadget id="calculator">51 - 1</gadget>
<output>50</output>

<gadget id="calculator">250 / 50</gadget>
<output>5</output>

<result>5</result>