A car drives from place A to place B, which is 287km away, and travels 123km after 1.5 hours. At this speed, how many hours will it take to get from A to B?
一辆汽车从相距287km的甲地开往乙地，出发1.5小时后行123km．照这样的速度，从甲地到乙地需要多少小时？
<gadget id="calculator">123 / 1.5</gadget>
<output>82</output>

<gadget id="calculator">287 / 82</gadget>
<output>7/2 = around 3.5</output>

<result>7/2 = around 3.5</result>