An express train and a slow train travel towards each other from A and B at the same time, and they meet after 3 hours. The express train is still 1/4 of the distance from B, and the slow train is 192 kilometers away from A. How many kilometers are there between A and B?
一辆快车和一辆慢车同时从甲乙两地相向而行，3小时后相遇，快车距乙地还有全程的(1/4)，慢车距甲地还有192甲乙两地相距多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">192 / (3/4)</gadget>
<output>256</output>

<result>256</result>