Cars A and B start from places A and B at the same time and drive toward each other. When car A has traveled 40% of the journey, car B is 80 kilometers away from point B. If this is the case, when car A arrives at point B , Car B is still 30 kilometers away from A, how many kilometers is the distance between A and B?
甲、乙两车同时从A、B两地同时出发，相向而行，当甲车行驶了全程的40%时，乙车距B地80千米，照这样行驶，当甲车到达B地时，乙车距A地还有30千米，A、B两地相距多少千米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(2/5) / (3/5)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / (2/3)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">80 * (3/2)</gadget>
<output>120</output>

<gadget id="calculator">80 + 120 + 30</gadget>
<output>230</output>

<result>230</result>