Two cars drive towards each other from two places. Car A travels 48.3 kilometers per hour, and car B travels 51.7 kilometers per hour. After 6.3 hours, the two cars meet on the way. How many kilometers is the road between the two places?
两辆汽车分别从两地相向开出，甲车每小时行48.3千米，乙车每小时行51.7千米，经过6.3小时两车在途中相遇，两地间的公路长多少千米？
<gadget id="calculator">48.3 + 51.7</gadget>
<output>100</output>

<gadget id="calculator">100 * 6.3</gadget>
<output>630</output>

<result>630</result>