15 cows eat 1260 kg of concentrated feed for 7 days, how many kg of concentrated feed does each cow eat per day?
15头奶牛7天吃精饲料1260千克，平均每头奶牛每天吃精饲料多少千克？
<gadget id="calculator">1_260 / 15 / 7</gadget>
<output>12</output>

<result>12</result>