Two trains depart from places A and B at the same time, and meet at a distance of 48 kilometers from the midpoint after 4 hours. It is known that the speed of the slow train is the speed of the express train (5/7). How many thousand are the distances between places A and B? rice.
两列火车分别从甲，乙两地同时相对开出，4小时后在距中点48千米处相遇，已知慢车速度是快车速度的(5/7)，甲，乙两地相距多少千米．
<gadget id="calculator">48 + 48</gadget>
<output>96</output>

<gadget id="calculator">5 + 7</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">(7/12) - (5/12)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">96 / (1/6)</gadget>
<output>576</output>

<result>576</result>