Aunt Wang raised 12 dairy cows, and each cow had to eat 25 kilograms of feed a day. How many kilograms of feed did these cows eat in a week?
王大妈养了12头奶牛，每头牛一天要吃掉25千克饲料，这些牛一星期要吃掉多少千克饲料？
<gadget id="calculator">12 * 25 * 7</gadget>
<output>2_100</output>

<result>2_100</result>