Two trains depart from two stations at the same time. Train A travels 70 kilometers per hour, and train B travels 65 kilometers per hour. They meet after 2.5 hours. How long is the railway between the two stations?
两列火车分别从两个车站同时相向开出，甲列火车每小时行70千米，乙列火车每小时行65千米，经过2.5小时相遇．两个车站之间的铁路长多少千米？
<gadget id="calculator">70 + 65</gadget>
<output>135</output>

<gadget id="calculator">135 * 2.5</gadget>
<output>337.5</output>

<result>337.5</result>