The fifth grade bought 900 homework books. If each class is divided into 84 books, there are still 24 books. How many classes are there in the fifth grade?
五年级买来900本作业本，如果每班分84本，则还少24本，五年级一共有多少个班？
<gadget id="calculator">900 + 24</gadget>
<output>924</output>

<gadget id="calculator">924 / 84</gadget>
<output>11</output>

<result>11</result>