A total of 14 trees were planted on both sides of a 42-meter-long path from beginning to end, and the distance between each two trees was how many meters.
在一段长42米的小路两边从头到尾共栽了14棵树，每两棵之间相距多少米．
<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">42 / 13</gadget>
<output>42/13 = around 3.230769</output>

<result>42/13 = around 3.230769</result>