A 600-meter-long road needs to be planted with pagoda trees every 15 meters on both sides (both ends are planted), how many pagoda trees are planted in total?
一条600米长的马路，要在它的两边每隔15米栽一棵槐树(两端都栽)，一共栽多少棵槐树？
<gadget id="calculator">600 / 15</gadget>
<output>40</output>

<gadget id="calculator">40 + 1</gadget>
<output>41</output>

<gadget id="calculator">41 * 2</gadget>
<output>82</output>

<result>82</result>