A chickadee can eat about 800 pests in 5 days. According to this calculation, how many pests can a chickadee eat in a month? (A month is calculated as 30 days.)
一只山雀5天大约能吃800只害虫，照这样计算，一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">800 / 5</gadget>
<output>160</output>

<gadget id="calculator">160 * 30</gadget>
<output>4_800</output>

<result>4_800</result>