There are 5 cowsheds in the dairy farm, and there are 8 cows in each cowshed. They are fed a total of 800 kilograms of feed a day. How many kilograms of feed do they eat on average every day?
奶牛场有5个牛棚，每个牛棚里有8头奶牛，一天共喂饲料800千克，平均每天吃饲料多少千克？
<gadget id="calculator">5 * 8</gadget>
<output>40</output>

<gadget id="calculator">800 / 40</gadget>
<output>20</output>

<result>20</result>