Xiaohua lives on the first floor, and Xiaoliang lives on the fifth floor. Xiaohua has to walk 60 stairs to Xiaoliang's house.
小华家住一楼，小亮家住五楼，小华到小亮家共要走60级楼梯，每上一层楼要走多少级楼梯．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<result>15</result>