There are 5 rows of willow trees planted by the lake, and each row has 52 willow trees. How many willow trees are there in total?
湖边种着5排柳树，每排有52棵，一共有多少棵柳树？
<gadget id="calculator">52 * 5</gadget>
<output>260</output>

<result>260</result>