Cars A and B start from places A and B at the same time and drive toward each other. After 5 hours, the two cars meet. After meeting, the two cars continue to move forward for 2 hours. At this time, car A has traveled 80% of the journey, and car B is far away from A. The ground is still 120 kilometers away. How many kilometers is the distance between A and B?
甲、乙两车分别从A、B两地同时出发，相向而行，5小时后两车相遇，相遇后两车继续前进2小时，这时甲车行了全程的80%，乙车距A地还有120千米，A、B两地相距多少千米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">(4/5) / 7</gadget>
<output>4/35 = around 0.114286</output>

<gadget id="calculator">(1/5) - (4/35)</gadget>
<output>3/35 = around 0.085714</output>

<gadget id="calculator">(3/35) * 7</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">120 / (2/5)</gadget>
<output>300</output>

<result>300</result>