There are 25 sycamore trees planted on one side of the road. If a silver tree is planted between every two sycamore trees, how many ginkgo trees will be planted in total?
马路一边栽了25棵梧桐树，如果每两棵梧桐树中间栽一棵银否树，一共要栽多少棵银杏树？
<gadget id="calculator">25 - 1</gadget>
<output>24</output>

<result>24</result>