A chickadee can eat 24 pests in 8 days, and a woodpecker can eat 72 pests in the same amount of time. How many more pests does a woodpecker eat every day than a chickadee.
一只山雀8天能吃掉24只害虫，同样多的时间一只啄木鸟能吃掉72只害虫．一只啄木鸟每天要比一只山雀多吃掉多少只害虫．
<gadget id="calculator">72 / 8</gadget>
<output>9</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<gadget id="calculator">9 - 3</gadget>
<output>6</output>

<result>6</result>