Xiaohua went up from the first floor to the fifth floor, a total of 80 steps, how many steps are there on each floor?
小花从一楼上到五楼，共上了80个台阶，每层有多少个台阶．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<result>20</result>