Two trains depart from places A and B at the same time and meet each other after 6 hours. Train A travels 140 kilometers per hour, and train B travels 150 kilometers per hour. How many kilometers are there between the two places?
两列火车分别从甲乙两地同时相对开出，6小时后相遇，甲车每小时行140千米，乙车每小时行150千米，甲乙两地相距多少千米？
<gadget id="calculator">140 + 150</gadget>
<output>290</output>

<gadget id="calculator">290 * 6</gadget>
<output>1_740</output>

<result>1_740</result>