There are 150 pens. If 5 pens are packed in a box and 6 boxes are packed in a case, how many cases can these pens be packed in?
有150支钢笔．如果每5支装在一个盒子里，6盒装一箱，这些钢笔可以装几箱？
<gadget id="calculator">150 / 5 / 6</gadget>
<output>5</output>

<result>5</result>