Zhang Hao’s family has 3 cowsheds, and each cowshed has 3 cows. They have been fed a total of 180 kilograms of feed. How many kilograms of feed is fed to each cow on average?
张浩家有3个牛棚，每个牛棚有3头奶牛，一共喂了180千克饲料，平均每头奶牛喂多少千克饲料？
<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">180 / 9</gadget>
<output>20</output>

<result>20</result>