A dairy farm has 4 cowsheds, each with 8 cows. On average, each cow is fed 30 kilograms of feed a day. How many kilograms of feed are fed to these cows in total?
奶牛场有4个牛棚，每个牛棚里有8头奶牛．平均每头奶牛一天喂30千克饲料，这些奶牛一天一共喂多少千克饲料？
<gadget id="calculator">8 * 4 * 30</gadget>
<output>960</output>

<result>960</result>