Along the road, plant a tree every 5 meters. A hare ran from the first tree to the 20th tree in one breath, how many meters did the hare run in total?
道路一旁，每5米种一棵树．一只野兔一口气从第1棵树跑到第20棵，这只野兔一共跑了多少米．
<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">19 * 5</gadget>
<output>95</output>

<result>95</result>