Li Ming’s family of three set off from Jinan to visit his grandmother on May 1st this year. The bus travels 64 kilometers per hour and arrives in 12 hours. When they return, they take the train to Jinan in 6 hours. If the distance traveled by car and train is the same, then the train travels every hour. How many kilometers?
今年五一李明一家三口由济南出发去看望祖母，客车每小时行64千米，12小时到达，返回时乘火车6小时到济南，若乘坐汽车与火车行驶的距离相同，那么火车每小时行多少千米？
<gadget id="calculator">12 / 6</gadget>
<output>2</output>

<gadget id="calculator">64 * 2</gadget>
<output>128</output>

<result>128</result>