There are 28 pigs in the farm, and each pig needs to be fed 15 kg of feed every day. How many kilograms of feed will be used in that month (30 days)?
饲养场有28头猪，每头猪每天要喂15千克饲料．那一个月(30天)要用多少千克饲料？
<gadget id="calculator">28 * 15 * 30</gadget>
<output>12_600</output>

<result>12_600</result>