Xiaofeng has to climb 64 steps to go home, and there are 16 steps between every two floors. How many floors does her family live in?
小凤回家要爬64级台阶，每两层之间有16级台阶，她家住在多少楼．
<gadget id="calculator">64 / 16</gadget>
<output>4</output>

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

<result>5</result>