A chickadee can eat about 480 pests in 3 days, so how many pests can it eat in a month? (A month is calculated as 30 days)
一只山雀3天大约能吃480只害虫，照这样计算一个月能吃多少只害虫？(一个月按30天计算)
<gadget id="calculator">480 / 3</gadget>
<output>160</output>

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

<result>4_800</result>