There are two binding groups. The first group can bind 7392 exercise books a day, and the second group can bind 6864 exercise books a day. They work 8 hours a day. How many more exercise books can the first group bind per hour than the second group?
两个装订组，第一组一天能装订7392本练习本，第二组一天能装订6864本练习本，每天工作8小时，第一组比第二组每小时多装订多少本练习本？
<gadget id="calculator">7_392 - 6_864</gadget>
<output>528</output>

<gadget id="calculator">528 / 8</gadget>
<output>66</output>

<result>66</result>