Binding a batch of books, it is planned to bind 2,500 books per day, and it will be completed in 30 days. Actually, 3,000 books are bound every day. How many days can it be finished?
装订一批书籍，计划每天装订2500本，30天完成，实际每天装订3000本，几天可以装订完？
<gadget id="calculator">30 / 3_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">2_500 * (1/100)</gadget>
<output>25</output>

<result>25</result>