Two trains, A and B, are traveling towards each other at the same time from two places 822 kilometers apart. A travels 65 kilometers per hour, and B travels 72 kilometers per hour. How many hours later will the two trains meet?
甲、乙两列火车分别从相距822千米的两地同时相向而行，甲每小时行65千米，乙每小时行72千米，几小时后两车相遇？
<gadget id="calculator">65 + 72</gadget>
<output>137</output>

<gadget id="calculator">822 / 137</gadget>
<output>6</output>

<result>6</result>