The students plant trees on both sides of the road with a total length of 150 meters, and plant a tree every 5 meters (both ends should be planted). How many trees will be planted in total?
同学们在全长150米的路的两边植树，每隔5米栽一棵树(两端要栽)，一共要栽多少棵？
<gadget id="calculator">150 / 5</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>