horse eats 12 kilograms of grass every day. According to this calculation, how many kilograms of grass can 25 horses eat in a week? (calculated in two ways)
一匹马每天吃12千克草，照这样计算，25匹马，一星期可吃多少千克草？(用两种方法计算)
<gadget id="calculator">12 * 7 * 25</gadget>
<output>2_100</output>

<result>2_100</result>