From city A to city B, if it travels 54 kilometers per hour, it takes 8 hours to travel. A train from city A to city B travels 96 kilometers in the first 2 hours. At this speed, how many hours will it take to arrive? (Use positive and negative proportions to solve the problem respectively)
A城到B城，如果每时行54千米，需要行驶8小时，一列火车从A城到B城，前2小时行驶了96千米．照这样的速度，再过几小时才能到达？(分别用正反比例解决问题)
<gadget id="calculator">54 * 8</gadget>
<output>432</output>

<gadget id="calculator">432 - 96</gadget>
<output>336</output>

<gadget id="calculator">96 / 2</gadget>
<output>48</output>

<gadget id="calculator">336 / 48</gadget>
<output>7</output>

<result>7</result>