The distance between A and B is 425 kilometers. A car starts from A to B and travels 255 kilometers in 3 hours. With this speed, how many more hours will it have to drive to reach B?
甲地和乙地相距425千米，一辆轿车从甲地出发开往乙地，3小时行驶了255千米，用这样的速度，它还要再行驶几小时才能到达乙地？
<gadget id="calculator">425 - 255</gadget>
<output>170</output>

<gadget id="calculator">255 / 3</gadget>
<output>85</output>

<gadget id="calculator">170 / 85</gadget>
<output>2</output>

<result>2</result>