A tit can eat about 1280 pests in 8 days. According to this calculation, how many pests can two tits eat in a month? (A month is calculated as 30 days)
一只山雀8天大约能吃1280只害虫，照这样计算，两只山雀一个月大约能吃多少只害虫？(一个月按30天计算)
<gadget id="calculator">1_280 / 8</gadget>
<output>160</output>

<gadget id="calculator">160 * 2 * 30</gadget>
<output>9_600</output>

<result>9_600</result>