Xiaohong goes upstairs. There are 20 steps on the first floor. Xiaohong walks a total of 80 steps. How many floors has she reached?
小红上楼，一层有20级台阶，小红共走了80级台阶，她走到了几楼？
<gadget id="calculator">80 / 20</gadget>
<output>4</output>

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

<result>5</result>