The dairy farm raises 25 cows, grazing 375 kg of grass every day. According to this calculation, how many kilograms of grass did these cows eat in April?
奶牛场养了25头奶牛，每天吃草375千克．照这样计算，这些奶牛四月份一共吃草多少千克？
<gadget id="calculator">375 * 25 * 30</gadget>
<output>281_250</output>

<result>281_250</result>