Cars A and B are traveling toward each other from A and B at the same time, with a speed ratio of 7:9. After meeting, the two cars continue to drive and return immediately when they reach their respective destinations. When the two cars meet for the second time, Car A leaves B. 120 kilometers. How many kilometers are there between A and B?
甲乙两辆汽车分别从A、B两地同时相向而行，速度比是7：9相遇后两车继续行驶，到达各自的终点立即返回，当两车第二次相遇时，甲汽车离B地120千米．A、B两地相距多少千米？
<gadget id="calculator">7 + 9</gadget>
<output>16</output>

<gadget id="calculator">7 / 16</gadget>
<output>7/16 = around 0.4375</output>

<gadget id="calculator">(7/16) * 3</gadget>
<output>21/16 = around 1.3125</output>

<gadget id="calculator">(21/16) - 1</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">120 / (5/16)</gadget>
<output>384</output>

<result>384</result>