A car drives from place A to place B for the whole journey (3/8). At this time, it is still 15 kilometers away from the midpoint. What is the distance in kilometers between A and B?
一辆汽车从甲地开往乙地，行了全程的(3/8)，这时离中点还有15千米．甲乙两地的距离是多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/2) - (3/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">15 / (1/8)</gadget>
<output>120</output>

<result>120</result>