The distance between A and B is 160 kilometers. The car starts from A and travels for 2.5 hours. There is still 60 kilometers to the end. How many hours does the car journey take?
甲乙两地相距160千米，汽车从甲地出发，行了2.5小时离终点还有60千米．汽车行完全程要多少小时？
<gadget id="calculator">160 - 60</gadget>
<output>100</output>

<gadget id="calculator">100 / 2.5</gadget>
<output>40</output>

<gadget id="calculator">160 / 40</gadget>
<output>4</output>

<result>4</result>