A car drives from city A to city B. After (2/3) hours, it travels the whole distance (3/5), exceeding the midpoint by 12 kilometers. How many kilometers are there between A and B?
一辆汽车从A城开往B城，(2/3)小时后行了全程的(3/5)，超过中点12千米．A、B两城相距多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/5) - (1/2)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">12 / (1/10)</gadget>
<output>120</output>

<result>120</result>