There are 18 steps to go up each floor of a building. Wang Fang walked up a total of 108 steps when going home. How many floors does her family live in?
一座楼房每上一层要走18级台阶，王芳回家共上了108级台阶，她家住在多少楼．
<gadget id="calculator">108 / 18</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>