A car travels 78 kilometers from place A to place B in 1.5 hours, and it is still 109.2 kilometers away from place B. At this speed, how many hours will it take the car to travel from A to B?
一辆汽车从甲地开往乙地，1.5小时行了78千米，这时离乙地还有109.2千米．照这样的速度，这辆汽车从甲地到乙地一共需要多少小时？
<gadget id="calculator">78 + 109.2</gadget>
<output>187.2</output>

<gadget id="calculator">78 / 1.5</gadget>
<output>52</output>

<gadget id="calculator">187.2 / 52</gadget>
<output>3.6</output>

<result>3.6</result>