A woodpecker can eat 635 pests every day, and a frog can eat 816 pests in 8 days. How many more pests do woodpeckers eat per day than frogs?
啄木鸟每天能吃635只害虫，青蛙8天才能吃816只害虫．啄木鸟比青蛙每天多吃多少只害虫？
<gadget id="calculator">816 / 8</gadget>
<output>102</output>

<gadget id="calculator">635 - 102</gadget>
<output>533</output>

<result>533</result>