The road from the school to the library is 1000 meters long, and trees should be planted at the starting and ending points on both sides of it. If the distance between every two trees is 8 meters, how many trees should be planted in total?
从学校到图书馆的公路长1000米，要在它两侧的起点和终点栽上树．如果每两棵树之间的距离是8米，一共要栽多少棵树？
<gadget id="calculator">1_000 / 8</gadget>
<output>125</output>

<gadget id="calculator">125 + 1</gadget>
<output>126</output>

<gadget id="calculator">126 * 2</gadget>
<output>252</output>

<result>252</result>