The average woodpecker eats 451 pests every day, and the chickadee can eat 1155 pests in 7 days. On average, how many more pests do woodpeckers eat per day than tits?
啄木鸟平均每天吃451只害虫，山雀7天能吃1155只害虫．啄木鸟平均每天比山雀多吃害虫多少只？
<gadget id="calculator">1_155 / 7</gadget>
<output>165</output>

<gadget id="calculator">451 - 165</gadget>
<output>286</output>

<result>286</result>