Hongqi Printing Factory has to bind 680 exercise books. After 5 days of binding, there are 105 unbound books left. How many books are bound every day in these 5 days?
红旗印刷厂要装订680本练习本，装订了5天，还剩105本没装订，这5天平均每天装订多少本？
<gadget id="calculator">680 - 105</gadget>
<output>575</output>

<gadget id="calculator">575 / 5</gadget>
<output>115</output>

<result>115</result>