Cars A and B are traveling towards each other from places A and B at the same time. When car A travels the whole distance (3/5) and car B travels the whole distance (2/3), the distance between the two cars is 240 kilometers. , How many kilometers is the distance between B and B?
甲、乙两车同时从A、B两地相向而行，当甲车行了全程的(3/5)，乙车行了全程的(2/3)时，两车相距240千米，A、B两地的路程是多少千米．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(2/3) - 1</gadget>
<output>-1/3 = around -0.333333</output>

<gadget id="calculator">(3/5) + (-1/3)</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">240 / (4/15)</gadget>
<output>900</output>

<result>900</result>