road is 5,400 meters long, and one tree is planted every 50 meters, and both sides are planted (both ends are also planted). How many trees should be planted in total?
一条公路长5400米，每隔50米栽一棵，两边都栽(两头也栽)，一共要栽多少棵？
<gadget id="calculator">108 * 2</gadget>
<output>216</output>

<result>216</result>