The distance between A and B is 576 kilometers. A train travels from A to B in 2.5 hours and travels 180 kilometers. According to this calculation, how many hours will it take to travel the rest of the way? (column ratio calculation)
甲、乙两地相距576千米，一列汽车从甲地开往乙地，2.5小时行了180千米，照这样计算，剩下的路还要行多少小时？(列比例式计算)
<gadget id="calculator">576 - 180</gadget>
<output>396</output>

<gadget id="calculator">180 / 2.5</gadget>
<output>72</output>

<gadget id="calculator">396 / 72</gadget>
<output>11/2 = around 5.5</output>

<result>11/2 = around 5.5</result>