The circumference of a reservoir is 1600 meters, and a willow tree is planted every 8 meters around the reservoir, and two poplar trees are planted between the two willow trees. How many trees can be planted in total?
一个水库的周长是1600米，在水库的周围每隔8米栽一棵柳树，在两棵柳树中间种两棵白杨树，一共可以种多少棵树？
<gadget id="calculator">1_600 / 8</gadget>
<output>200</output>

<gadget id="calculator">200 * 2</gadget>
<output>400</output>

<gadget id="calculator">200 + 400</gadget>
<output>600</output>

<result>600</result>