On the bank of the reservoir, 14 willow trees are lined up in a row, and 2 peach trees are planted between every 2 willow trees. How many peach trees can be planted in total?
水库岸边，14棵柳树排成一排，在每两棵柳树中间种2棵桃树，一共能种多少棵桃树．
<gadget id="calculator">14 - 1</gadget>
<output>13</output>

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

<result>26</result>