Ms. Huang recently moved to a new studio. She stood on the balcony and found that there were 3 balconies when she looked up and 6 balconies when she looked down. So, how many floors are there in the building where Mr. Huang is located?
黄老师最近搬到新的工作室．她站在阳台上发现往上看时有3个阳台；往下看时有6个阳台．那么，黄老师所在的这座大楼一共有多少层．
<gadget id="calculator">3 + 6 + 1</gadget>
<output>10</output>

<result>10</result>