A train traveled 247.5 kilometers in 4.5 hours, and Master Wang traveled 37.5 kilometers in 3 hours by bicycle. How many times faster is the speed of this train than Master Wang's bicycle?
一列火车4.5小时行驶了247.5千米，王师傅骑自行车3小时行驶了37.5千米．这列火车的速度是王师傅骑自行车的速度的多少倍？
<gadget id="calculator">247.5 / 4.5</gadget>
<output>55</output>

<gadget id="calculator">37.5 / 3</gadget>
<output>12.5</output>

<gadget id="calculator">55 / 12.5</gadget>
<output>4.4</output>

<result>4.4</result>