A passenger car travels from A to B in 6 hours; a truck travels 90 kilometers per hour from B to A. Now two cars, passenger and freight, are traveling towards each other from places A and B at the same time. When they meet, the ratio of the distance traveled by the passenger car and the truck is 7:5. How many kilometers is the distance between places A and B?
客车从甲地到乙地，要行6小时；货车从乙地到甲地，每小时行90千米．现在客、货两车从甲、乙两地同时相向而行，相遇时，客车与货车所行的路程比是7：5，求甲、乙两地的距离是多少千米？
<gadget id="calculator">7 / 5</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">90 * (7/5) * 6</gadget>
<output>756</output>

<result>756</result>