Two cars drive opposite each other from places A and B. Car A travels 38 kilometers per hour, and car B travels 42 kilometers per hour. After 5 hours, the two cars meet. How many kilometers are there between A and B?
两辆汽车从甲、乙两地相对开出，甲车每小时行38千米，乙车每小时行42千米，5小时后两车相遇．甲、乙两地相距多少千米？
<gadget id="calculator">42 + 38</gadget>
<output>80</output>

<gadget id="calculator">80 * 5</gadget>
<output>400</output>

<result>400</result>