There is a 150-meter-long road from Mengtong Township Central School to Mengtong Kindergarten. The school will plant trees on both sides of the road (both ends must be planted), one tree every 3 meters. How many trees will be planted in total?
猛硐乡中心学校到猛硐幼儿园有一条长150米的路，学校要在路的两边栽树(两头都要栽)，每隔3米栽一棵．一共要栽多少棵树？
<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<gadget id="calculator">50 + 1</gadget>
<output>51</output>

<gadget id="calculator">51 * 2</gadget>
<output>102</output>

<result>102</result>