If a horse eats 12 kilograms of grass every day, how many kilograms of grass can 25 horses eat in a week?
一匹马每天吃12千克草，照这样节省，25匹马，一星期可吃多少千克草？
<gadget id="calculator">12 * 25 * 7</gadget>
<output>2_100</output>

<result>2_100</result>