In order to beautify the environment, the garden workers plan to plant trees on both sides of a 150m-long road, every 3m. If both ends of the road are planted, how many saplings are needed in total?
为了美化环境，园林工人现计划在一条150m长的道路两旁种树，每隔3m种一棵．如果道路的两端都种，那么一共需要多是棵树苗？
<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>