A passenger ship sails from Shanghai to Wuhan. After 12 hours, the ratio of the traveled distance to the untraveled distance is 3:2. At this speed, how many hours will it take to complete the 1100 km journey?
一艘客轮从上海开往武汉，12小时后已行路程与未行路程的比是3：2，照这样的速度，行完全程1100千米，需要多少小时？
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">12 / (3/5)</gadget>
<output>20</output>

<result>20</result>