A woodpecker can eat 645 pests per day, and a frog can eat 490 pests in 5 days. How many more pests can a woodpecker eat per day than a frog?
一只啄木鸟每天能吃645只害虫，一只青蛙5天能吃490只害虫，一只啄木鸟比一只青蛙每天多吃多少只害虫？
<gadget id="calculator">490 / 5</gadget>
<output>98</output>

<gadget id="calculator">645 - 98</gadget>
<output>547</output>

<result>547</result>