Plant trees on both sides of a 480-meter-long road, with a distance of 15 meters between every two trees (both ends are planted), how many trees should be planted in total?
在长480米的路的两边栽树，每两棵树之间15米(两端都栽)，一共要栽多少棵树？
<gadget id="calculator">480 / 15</gadget>
<output>32</output>

<gadget id="calculator">32 + 1</gadget>
<output>33</output>

<gadget id="calculator">33 * 2</gadget>
<output>66</output>

<result>66</result>