The 2 cows eat a total of 900 kilograms of feed in 25 days. How many kilograms of feed does each cow eat per day on average?
2头奶牛25天一共吃饲料900千克，平均每头奶牛每天吃饲料多少千克？
<gadget id="calculator">900 / 2 / 25</gadget>
<output>18</output>

<result>18</result>