In a residential building, each floor has 20 steps. Xiaoyu walked up 120 steps from the first floor. How many floors did Xiaoyu reach?
一栋居民楼，每上一层有20级台阶，小宇从一楼向上走了120级台阶，这时小宇到了几楼？
<gadget id="calculator">120 / 20</gadget>
<output>6</output>

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

<result>7</result>