A car travels 140 kilometers in 2 hours. At this speed, the distance from point A to point B is 400 kilometers. How many hours does it take?
一辆汽车2小时行驶140千米，照这样的速度，从甲地到乙地的距离是400千米，需要行驶多少小时？
<gadget id="calculator">140 / 2</gadget>
<output>70</output>

<gadget id="calculator">400 / 70</gadget>
<output>40/7 = around 5.714286</output>

<result>40/7 = around 5.714286</result>