The fast and slow cars are going towards each other from A and B at the same time, and the distance ratio when they meet is 8:7. After the meeting, the express train moves forward at the same speed, and the slow train moves forward at a speed 15 kilometers per hour faster than the original speed. The two cars arrive at point A and point B at the same time. The express train took 10 hours. How many kilometers are there between A and B?
快、慢两车同时从A、B两地相向而行，相遇时的路程比是8：7．相遇后快车以同样的速度向前行，慢车以每小时比原来多15千米的速度前进，两车同时到达A地和B地．快车用了10小时．A、B两地相距多少千米？
<gadget id="calculator">15 / 560</gadget>
<output>3/112 = around 0.026786</output>

<gadget id="calculator">15 / (3/112)</gadget>
<output>560</output>

<result>560</result>