Teacher Wang brought 100 yuan to buy notebooks, each notebook was 8 yuan, and the salesperson gave Teacher Wang 12 yuan. How many exercise books did Teacher Wang buy?
王老师带了100元钱去买笔记本，每本笔记本8元，售货员找给王老师12元，王老师买了多少本练习本？
<gadget id="calculator">100 - 12</gadget>
<output>88</output>

<gadget id="calculator">88 / 8</gadget>
<output>11</output>

<result>11</result>