Two cars, A and B, leave A in the same direction at the same time. A travels 55 kilometers per hour, and B travels 45 kilometers per hour. After driving 200 kilometers, A turns around and meets B on the way. How many hours did the two cars travel each time?
甲、乙两车同时从A地同向开出，甲车每小时行55千米，乙车每小时行45千米，甲车行驶了200千米后转头返回与途中的乙相遇，相遇时两车各行了几个小时？
<gadget id="calculator">200 / 55</gadget>
<output>40/11 = around 3.636364</output>

<gadget id="calculator">45 * (40/11)</gadget>
<output>1_800/11 = around 163.636364</output>

<gadget id="calculator">200 - (1_800/11)</gadget>
<output>400/11 = around 36.363636</output>

<gadget id="calculator">55 + 45</gadget>
<output>100</output>

<gadget id="calculator">(400/11) / 100</gadget>
<output>4/11 = around 0.363636</output>

<gadget id="calculator">(4/11) + (40/11)</gadget>
<output>4</output>

<result>4</result>