The school cafeteria brought in a batch of rice, ate 40 kg a day, and planned to eat it for 15 days. Due to the reduction in the number of people, the actual daily consumption is only 25 kg. In fact, I can eat a few days more than planned.
学校食堂进一批大米，每天吃40千克，计划吃15天．由于人数减少，实际每天只吃25千克．实际比计划可多吃几天．
<gadget id="calculator">15 / 25</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">40 * (3/5)</gadget>
<output>24</output>

<gadget id="calculator">24 - 15</gadget>
<output>9</output>

<result>9</result>