The distance between A and B is 330 kilometers. A car travels from A to B. It takes 6 hours to get there, but it takes 1 hour less to return along the original road. What is the speed when returning?
甲、乙两地相距330千米，一辆汽车从甲地开往乙地，去的时候用了6小时，沿原路返回时少用了1小时，返回时的速度是多少？
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">330 / 5</gadget>
<output>66</output>

<result>66</result>