There is a 500-meter-long road, and a tree is planted every 5 meters on both sides of the road from the beginning to the end. How many saplings does the garden department need to transport?
有一条长500米的公路，在公路的两旁从头到尾每隔5米栽一棵树，园林部门需要运来多少棵树苗？
<gadget id="calculator">500 / 5</gadget>
<output>100</output>

<gadget id="calculator">100 + 1</gadget>
<output>101</output>

<gadget id="calculator">101 * 2</gadget>
<output>202</output>

<result>202</result>