A tit can eat 1,600 pests in 10 days. According to this calculation, how many pests can a tit eat in a month? (A month is calculated as 30 days.)
一只山雀10天能吃1600只害虫，照这样计算，一只山雀一个月大约能吃多少害虫？(一个月按30天计算．)
<gadget id="calculator">1_600 / 10</gadget>
<output>160</output>

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

<result>4_800</result>