The school-run factory originally planned to bind 21,600 exercise books in 12 days. The ratio of the actual number of books bound per day to the number of books bound per day originally planned is 5:6. How many books are actually bound every day?
校办工厂原计划12天装订21600本练习本，实际每天装订的本数和原计划每天装订的本数之比是5：6，实际每天装订多少本？
<gadget id="calculator">21_600 / 12</gadget>
<output>1_800</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">1_800 * (5/6)</gadget>
<output>1_500</output>

<result>1_500</result>