There is a 90-meter-long path at the north end and the south end of Wangcun. On both sides of this path, Jiangnan locust tree will be planted, and the distance between the two trees will be 3 meters. Do the math, how many Jiangnan locust trees should be planted? (Both ends must be planted)
王村北头和南头有条90米长的小路，在这条小路的两边要种江南槐，两树间隔3米．你算算，该种多少株江南槐？(两头都要种)
<gadget id="calculator">90 / 3</gadget>
<output>30</output>

<gadget id="calculator">30 + 1</gadget>
<output>31</output>

<gadget id="calculator">31 * 2</gadget>
<output>62</output>

<result>62</result>