Xiao Ming's family lives upstairs. It takes him 2 minutes to go up to each floor. It takes Xiao Ming 8 minutes to get home from the first floor. Which floor does his family live on?
小明家住在居民楼上，他每上一层楼要2分钟，小明从一楼上楼回家用了8分钟，他家住在几楼？
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 + 1</gadget>
<output>5</output>

<result>5</result>