The passenger car and the truck depart from A and B oppositely at the same time, the bus travels from A to B (4/5), and the truck travels from B to A (3/4). At this time, the two vehicles The distance is 220 kilometers, how many kilometers is the distance between A and B?
客车和货车同时从A、B两地相对开出，客车从A地到B行了全程的(4/5)，货车从B地到A行了全程的(3/4)，这时两车相距220千米，A、B两地相距多少千米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(3/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">220 / (11/20)</gadget>
<output>400</output>

<result>400</result>