A truck traveled 60 kilometers in 2 hours to the disaster area to deliver relief supplies. It is 180 kilometers from the starting point to the disaster area. How many hours will it take to drive at this speed? (Solve with ratio)
一列货车前往灾区运送救灾物资，2小时行驶了60千米，．从出发地到灾区有180千米，按照这样的速度，行驶全程要多少小时？(用比例解)
<gadget id="calculator">2 * 180</gadget>
<output>360</output>

<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<result>6</result>