Two cars are traveling toward each other from two cities at the same time. Car A travels 50 kilometers per hour, and car B travels 65 kilometers per hour. After 5 hours, the distance between the two cars is 140 kilometers (they have not met). How far is the distance between A and B?
两辆车同时从两城相向而行，甲车每小时行50千米，乙车每小时行65千米，5小时后两车相距140千米(未相遇)，甲乙两城相距多远？
<gadget id="calculator">50 + 65</gadget>
<output>115</output>

<gadget id="calculator">115 * 5</gadget>
<output>575</output>

<gadget id="calculator">575 + 140</gadget>
<output>715</output>

<result>715</result>