Grandpa takes a car, and Xiao Li rides a bicycle, going from A to B along a road at the same time. A car travels 40 kilometers per hour, which is 2.5 times the speed of a bicycle. As a result, grandpa arrived at B 3 hours earlier than Xiao Li. How many miles is the distance between A and B?
爷爷坐汽车，小李骑自行车，沿一条公路同时从A地去B地．汽车每小时行40千米，是自行车速度的2.5倍．结果爷爷比小李提前3小时到达B地．A，B两地间的路程是多少千米？
<gadget id="calculator">40 / 2.5</gadget>
<output>16</output>

<gadget id="calculator">16 * 3</gadget>
<output>48</output>

<gadget id="calculator">40 - 16</gadget>
<output>24</output>

<gadget id="calculator">48 / 24</gadget>
<output>2</output>

<gadget id="calculator">2 * 40</gadget>
<output>80</output>

<result>80</result>