There are 45 willow trees planted on one side of the river beach, and 2 peach trees are planted between every two willow trees. How many peach trees are planted?
河滩的一边栽了45棵柳树，每两棵柳树之间栽2棵桃树，栽了多少棵桃树？
<gadget id="calculator">45 - 1</gadget>
<output>44</output>

<gadget id="calculator">2 * 44</gadget>
<output>88</output>

<result>88</result>