One building is 135 meters high, the floor height of the ground floor is 4.8 meters, and the floor height of each other floor is 3.1 meters. How many floors does this building have?
一幢高135米，底楼的层高是4.8米，其余每层的层高都是3.1米．这幢楼一共有多少层？
<gadget id="calculator">135 - 4.8</gadget>
<output>130.2</output>

<gadget id="calculator">130.2 / 3.1</gadget>
<output>42</output>

<gadget id="calculator">42 + 1</gadget>
<output>43</output>

<result>43</result>