The school allocates student dormitories. If there are 6 students in each room, there will be no beds for 34 students; if there are 8 students in each room, 4 rooms will be empty. How many rooms are there in the student dormitory?
学校分配学生宿舍，若每个房间住6人，则有34人没有床位；若每个房间住8人，则空4个房间．问学生宿舍有多少间？
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 + 34</gadget>
<output>66</output>

<gadget id="calculator">8 - 6</gadget>
<output>2</output>

<gadget id="calculator">66 / 2</gadget>
<output>33</output>

<result>33</result>