The distance between A and B is 200 kilometers. A car travels from A to B at 8 o'clock (4/7). At this speed, how long will it take to complete the journey?
甲乙两地相距200千米，一辆汽车从甲地到乙地，8时刚好行全程的(4/7)，照这样的速度，行完全程还需要几时？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">8 / (4/7)</gadget>
<output>14</output>

<gadget id="calculator">14 - 8</gadget>
<output>6</output>

<result>6</result>