Two cars, A and B, leave opposite places A and B at the same time. Car A travels an average of 45 km per hour, and car B travels an average of 65 km per hour. There is still a distance of 60km, so how many kilometers is the distance between A and B?
甲，乙两辆汽车同时从A，B两地相对开出，甲车平均每时行45km，乙车平均每时行65km，当乙车到达A，B两地中点处时，与甲车还相距60km，那么A，B两地间的路程长多少千米？
<gadget id="calculator">65 - 45</gadget>
<output>20</output>

<gadget id="calculator">60 / 20</gadget>
<output>3</output>

<gadget id="calculator">3 * 2 * 65</gadget>
<output>390</output>

<result>390</result>