The bird ate 308 pests in a week, and the frog ate 280 pests in 4 days. How many fewer pests does a bird eat per day on average than a frog?
小鸟一个星期吃了308只害虫，青蛙4天吃了280只害虫．一只小鸟平均每天比一只青蛙少吃多少只害虫？
<gadget id="calculator">280 / 4</gadget>
<output>70</output>

<gadget id="calculator">308 / 7</gadget>
<output>44</output>

<gadget id="calculator">70 - 44</gadget>
<output>26</output>

<result>26</result>