Xiaohong's family lives in a tall building. She has 7 floors above and 8 floors below. How many floors does Xiaohong's house have?
小红家住在一座高楼上，她上面有7层，下面有8层，小红家的楼房一共多少层？
<gadget id="calculator">7 + 8 + 1</gadget>
<output>16</output>

<result>16</result>