Two brothers and sisters walk toward each other from places A and B at the same time. The brother takes 2 hours to complete the journey, and the sister takes 3 hours to complete the journey. When the two meet, the brother has traveled 2.4 kilometers longer than the sister. Find the distance between A and B?
兄妹俩同时从甲乙两地相向而行，兄走完全程要2小时，妹走完全程要3小时，两人相遇时兄比妹多走了2.4千米．求甲乙两地之间距离？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

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

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2.4 / (1/5)</gadget>
<output>12</output>

<result>12</result>