In a 17-storey building, the height of the first floor is 4.5 meters, and the height of each other floor is 3.2 meters. How many meters is this building?
一幢高17层的楼房，一楼的层高是4.5米，其余每层的层高都是3.2米，这幢楼高多少米？
<gadget id="calculator">17 - 1</gadget>
<output>16</output>

<gadget id="calculator">16 * 3.2</gadget>
<output>51.2</output>

<gadget id="calculator">4.5 + 51.2</gadget>
<output>55.7</output>

<result>55.7</result>