A batch of rice was shipped from the school cafeteria. The plan was to eat 28.5 kilograms per day for 30 days, but the actual food was 34.2 kilograms per day. How many days did it take?
学校食堂运来一批大米，计划每天吃28.5千克，可以吃30天，实际每天吃了34.2千克，实际几天吃完？
<gadget id="calculator">30 / 34.2</gadget>
<output>0.877193</output>

<gadget id="calculator">28.5 * 0.877193</gadget>
<output>25</output>

<result>25</result>