Plant trees on both sides of a 100-meter-long road. The starting point is the platform without planting. A total of 20 trees are planted. The distance between two adjacent trees is equal. What is the distance between two adjacent trees?
在一条长100米的大路两旁种树，起点是站台不种，一共种了20棵，相邻的两棵树之间的距离相等．相邻的两棵树之间的距离是多少？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">100 / 10</gadget>
<output>10</output>

<result>10</result>