A frog eats 72 pests a day. According to this calculation, how many pests does this frog eat in a month?
一只青蛙一天吃72只害虫，照这样计算，这只青蛙一个月吃多少只害虫？
<gadget id="calculator">72 * 30</gadget>
<output>2_160</output>

<result>2_160</result>