Two trucks depart from A and B at the same time and meet each other in 6 hours. The express train travels 35 kilometers per hour, and the slow train travels 30 kilometers per hour. How many kilometers are there between A and B?
两辆货车分别从甲乙两地同时相对开出，6小时相遇，快车每小时行35千米，慢车每小时行30千米，甲乙两地相距多少千米？
<gadget id="calculator">35 + 30</gadget>
<output>65</output>

<gadget id="calculator">65 * 6</gadget>
<output>390</output>

<result>390</result>