Plant trees on the side of a 240-meter-long road, planting from the beginning to the end, a total of 16 trees are planted, how many meters are there between each two?
在一条240米长的道路一旁种树，从头到尾地种，一共种了16棵树，每两棵间隔多少米？
<gadget id="calculator">16 - 1</gadget>
<output>15</output>

<gadget id="calculator">240 / 15</gadget>
<output>16</output>

<result>16</result>