Two cars are driving from east to west at the same time, car A travels 46 kilometers per hour, and car B travels 49 kilometers per hour. After driving for 2.5 hours, car B just arrives at the destination. At this time, car A is still far away from the destination. How far?
两辆汽车同时从东向西行驶，甲车每小时行46千米，乙车每小时行49千米，行了2.5小时后，乙车正好到达目的地，这时甲车离目的地还有多远？
<gadget id="calculator">49 - 46</gadget>
<output>3</output>

<gadget id="calculator">3 * 2.5</gadget>
<output>7.5</output>

<result>7.5</result>