A road is 180 meters long, and plane trees are planted on one side of it from the beginning to the end, every 3 meters, how many trees should be planted in total?
一条路长180米，在它的一边从头到尾都种上梧桐树，每隔3米种一棵，一共要种多少棵？
<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 + 1</gadget>
<output>61</output>

<result>61</result>