A train travels from city A to city B at a speed of 66 km/h, and it takes 14 hours. It took 2 hours less to return than to go, what was the speed when returning?
一列火车从甲城到乙城，去时的速度是66千米/时，用了14小时．返回时比去时少用了2小时，返回时的速度是多少？
<gadget id="calculator">14 - 2</gadget>
<output>12</output>

<gadget id="calculator">14 / 12</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">66 * (7/6)</gadget>
<output>77</output>

<result>77</result>