A passenger car travels 20% of the journey from point A to point B every hour, and a truck travels from point B to point A at 120 kilometers per hour. If two cars leave from point A and point B opposite each other at the same time, they meet each other after 3 hours , A, B two places how many kilometers apart?
客车从甲地到乙地，每小时行全程的20%，货车从乙地开往甲地，每小时行120千米，如果两车同时从甲，乙两地相对开出，经过3小时相遇，甲，乙两地相距多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">360 / (2/5)</gadget>
<output>900</output>

<result>900</result>