car travels 140 kilometers in 2 hours. At this speed, the distance from A to B is 490 kilometers. How many hours does it take? (answer with ratio)
一辆汽车2小时行驶140千米，照这样速度，从甲地到乙地长490千米，需要行驶多少小时？(用比例解答)
<gadget id="calculator">2 * 490</gadget>
<output>980</output>

<gadget id="calculator">980 / 140</gadget>
<output>7</output>

<result>7</result>