river embankment is 60 meters long, and willow trees are planted on both sides of it, with one tree every 5 meters (both ends must be planted), how many willow trees will be planted in total?
一条河堤长60米，在它的两侧栽上柳树，每隔5米栽一棵(两端都要栽)，一共要栽多少棵柳树？
<gadget id="calculator">60 / 5</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<gadget id="calculator">13 * 2</gadget>
<output>26</output>

<result>26</result>