Two cars, A and B, leave Nanjing and Wuxi at the same time. Car A travels 49 kilometers per hour, and car B travels 39 kilometers per hour. After 2.5 hours the two cars met. How many kilometers is the distance between Nanjing and Wuxi?
甲、乙两辆汽车同时从南京和无锡相对开出，甲车每小时行49千米，乙车每小时行39千米．经过2.5小时两车相遇．南京和无锡两地相距多少千米？
<gadget id="calculator">49 + 39</gadget>
<output>88</output>

<gadget id="calculator">88 * 2.5</gadget>
<output>220</output>

<result>220</result>