Two trains A and B depart from opposite places at the same time and meet after 4 hours. It is known that car A travels 95 kilometers per hour and car B travels 85 kilometers per hour, how many kilometers are the distance between the two places?
甲、乙两列火车同时从两地相对开出，经过4小时相遇．已知甲车每小时行95千米，乙车每小时行85千米，求两地相距多少千米？
<gadget id="calculator">95 + 85</gadget>
<output>180</output>

<gadget id="calculator">180 * 4</gadget>
<output>720</output>

<result>720</result>