Cars A and B start from places A and B at the same time, and drive towards each other with a speed ratio of 3:2; when the two cars meet, the speed ratio is changed to 4:5, so that when car A arrives at point B, car B is still far away from point A. There are 8 kilometers. What is the distance between A and B in miles?
甲乙两车同时从A、B两地出发，相向而行，速度比是3：2；两车相遇后速度比改为4：5，这样当甲车到达B地时，乙车离A地还有8千米．A、B两地相距多少千米．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</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">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(2/5) * (5/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(2/5) + (1/2)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">8 / (1/10)</gadget>
<output>80</output>

<result>80</result>