5 teachers take 11 students to the park to row boats. If a boat can accommodate 4 people, how many boats do they need to rent?
5个老师带着11个学生到公园划船，如果一艘小船可以坐4个人，他们需要租几艘小船？
<gadget id="calculator">11 + 5</gadget>
<output>16</output>

<gadget id="calculator">16 / 4</gadget>
<output>4</output>

<result>4</result>