Frogs can eat about 240 pests a day, and Xiaoyan eliminates 15 times as many pests as frogs in one month. How many pests can swallows kill in a month?
青蛙一天能吃掉大约240只害虫，小燕一个月消灭的害虫是青蛙一天消灭的15倍．燕子一个月能消灭多少只害虫？
<gadget id="calculator">240 * 15</gadget>
<output>3_600</output>

<result>3_600</result>