Cars A and B travel towards each other from A and B respectively. Car A travels 74.5 kilometers per hour, and Car B travels 84.6 kilometers per hour. After 2.5 hours, the two cars meet. How many kilometers are there between A and B?
甲、乙两车分别从A、B两地相向而行，甲车每小时行驶74.5千米，乙车每小时行驶84.6千米，2.5小时后两车相遇．A、B两地相距多少千米？
<gadget id="calculator">74.5 + 84.6</gadget>
<output>159.1</output>

<gadget id="calculator">159.1 * 2.5</gadget>
<output>397.75</output>

<result>397.75</result>