Mr. Li goes upstairs to class. There are 12 steps on each floor, and there are 48 steps in total. How many floors does Mr. Li take to class?
李老师上楼上课，每层楼阶12级，一共有48级，李老师上多少楼上课．
<gadget id="calculator">48 / 12</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>