Two cars leave from places A and B at the same time. Car A travels 50 kilometers per hour, and car B travels 60 kilometers per hour. After 4 o'clock, the distance between the two cars is still 20% of the whole journey. How many kilometers are there between A and B?
两辆汽车分别从甲、乙两地同时相对开出，甲车每时行50千米，乙车每时行60千米，经过4时两车还相距全程的20%．甲、乙两地相距多少千米？
<gadget id="calculator">50 + 60</gadget>
<output>110</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">4 / (4/5)</gadget>
<output>5</output>

<gadget id="calculator">110 * 5</gadget>
<output>550</output>

<result>550</result>