There is a tree every 40 meters on one side of a road, and a total of 121 trees are planted at the end of the road. If 51 trees are to be planted on the road with the same length, what is the distance between every two adjacent trees?
在一条路的一边每隔40米有一棵树，首尾都栽共有121棵树．在同样长的公路上准备栽51棵树，每相邻两棵树的距离是多少？
<gadget id="calculator">121 - 1</gadget>
<output>120</output>

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

<gadget id="calculator">120 / 50</gadget>
<output>12/5 = around 2.4</output>

<gadget id="calculator">40 * (12/5)</gadget>
<output>96</output>

<result>96</result>