car needs to travel 360 kilometers from point A to point B. This car travels 90 kilometers in 2 hours. According to this calculation, how many more hours will it take? (Solve with ratio)
一辆汽车从甲地开往乙地需行360千米，这辆汽车2小时行90千米，照这样计算，还要再行几小时？(用比例解)
<gadget id="calculator">360 - 90</gadget>
<output>270</output>

<gadget id="calculator">270 * 2</gadget>
<output>540</output>

<gadget id="calculator">540 / 90</gadget>
<output>6</output>

<result>6</result>