A commercial building is 75.5 meters high, the height of the first floor is 4.1 meters, and the height of each other floor is 3.4 meters. How many floors does this building have?
某商业大厦高75.5米，一楼的层高是4.1米，其余每层的层高都是3.4米．这幢大厦一共有多少层？
<gadget id="calculator">75.5 - 4.1</gadget>
<output>71.4</output>

<gadget id="calculator">71.4 / 3.4</gadget>
<output>21</output>

<gadget id="calculator">21 + 1</gadget>
<output>22</output>

<result>22</result>