There are 120 escalators between the first and second floors of the shopping mall. It takes 60 seconds for Xiao Ming to take the escalator to go upstairs while standing still. If Xiao Ming continues to walk up the escalator while taking the escalator, it takes 24 seconds for him to go upstairs. Then when the escalator does not move, Xiao Ming walks along the escalator. How many seconds does it take to go upstairs.
商场一二层之间有120级扶梯，小明站着不动乘扶梯上楼需要60秒，如果在乘扶梯的同时小明继续向上走需要24秒上楼，那么扶梯不动时，小明徒步沿扶梯上楼需要多少秒．
<gadget id="calculator">120 / 24</gadget>
<output>5</output>

<gadget id="calculator">120 / 60</gadget>
<output>2</output>

<gadget id="calculator">5 - 2</gadget>
<output>3</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<result>40</result>