Cars A and B drive opposite each other from places A and B at the same time. Car A travels 63.5 kilometers per hour, and car B travels 56.5 kilometers per hour. They meet each other in 4 hours. How many kilometers are there between A and B?
甲乙两车从A、B两地同时相对开出，甲车每小时行63.5千米，乙车每小时行56.5千米，4小时相遇．A、B两地相距多少千米？
<gadget id="calculator">63.5 + 56.5</gadget>
<output>120</output>

<gadget id="calculator">120 * 4</gadget>
<output>480</output>

<result>480</result>