passenger car and a truck drive in opposite directions from the middle of A and B at the same time. After 3 hours, the bus arrives at A, and the truck is still 36 kilometers away from B. It is known that the speed of the truck is that of the passenger car (7/9), how many kilometers are the distance between A and B?
客车和货车同时从甲、乙两地的中间向相反方向行驶，3小时后，客车到达甲地，货车离乙地还有36千米．已知货车的速度是客车的(7/9)，甲、乙两地相距多少千米？
<gadget id="calculator">7 / 9</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">36 / (2/9)</gadget>
<output>162</output>

<gadget id="calculator">162 * 2</gadget>
<output>324</output>

<result>324</result>