Two cars drive from place A to place B. Car A travels 64 kilometers per hour, and car B travels 80 kilometers per hour. Car B does not leave until 1.5 hours after car A leaves. As a result, both cars arrive at place B at the same time. How many hours did car B drive at this time?
两辆汽车从A地开往B地，甲车每小时行64千米，乙车每小时行80千米，甲车开出1.5小时候，乙车才开出，结果两车同时到达B地，这时乙车行了多少小时？
<gadget id="calculator">80 - 64</gadget>
<output>16</output>

<gadget id="calculator">1.5 / 16</gadget>
<output>0.09375</output>

<gadget id="calculator">64 * 0.09375</gadget>
<output>6</output>

<result>6</result>