In the days of learning from Lei Feng, the students had to plant landscape trees on both sides of a 400-meter-long street, one every 8 meters (both ends should be planted). How many saplings are needed in total?
在学雷锋的日子里，同学们要在一条长400米的街道两旁种上风景树，每隔8米种一棵(两端要种)．一共需要多少棵树苗？
<gadget id="calculator">400 / 8</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>