On the map of China with a scale of 1:6000000, the distance between the two places is measured to be 10 centimeters. Two trains A and B depart from the two places at the same time and meet each other in 6 hours. Car A travels 55 kilometers per hour, how many kilometers per hour does Car B travel?
在比例尺为1：6000000的中国地图上，量得两地间的距离是10厘米，甲、乙两列火车同时从两地相对开出，6小时相遇．甲车每小时行55千米，乙车每小时行多少千米？
<gadget id="calculator">55 * 6</gadget>
<output>330</output>

<gadget id="calculator">600 - 330</gadget>
<output>270</output>

<gadget id="calculator">270 / 6</gadget>
<output>45</output>

<result>45</result>