The passenger car and the truck travel towards each other from A and B at the same time, and meet at a distance of 12km from the midpoint. When they meet, it is known that the distance traveled by the passenger car is (4/5) the distance traveled by the truck. How many kilometers are there between A and B?
客车和货车同时从甲乙两地相向而行，在距离中点12km处相遇，相遇时，已知客车行的路程是货车行的路程的(4/5)．甲乙两地相距多少千米？
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

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

<gadget id="calculator">(5/9) - (1/2)</gadget>
<output>1/18 = around 0.055556</output>

<gadget id="calculator">12 / (1/18)</gadget>
<output>216</output>

<result>216</result>