Cars A and B leave opposite each other from the two cities of AB at the same time. Car A travels 80 kilometers per hour, and car B travels 65 kilometers per hour. After 3 hours, the two cars meet, how many kilometers are the distance between AB and AB?
甲、乙两车同时从AB两城相对开出．甲车每小时行80千米，乙车每小时行65千米．3小时后两车相遇，AB两城相距多少千米？
<gadget id="calculator">80 + 65</gadget>
<output>145</output>

<gadget id="calculator">145 * 3</gadget>
<output>435</output>

<result>435</result>