A truck and a truck leave from A and B at the same time and meet each other in 5 hours. The passenger car travels 80 kilometers per hour and the truck travels 90 kilometers per hour. How many kilometers are there between A and B?
一辆卡车和一辆货车分别从甲、乙两地同时相对开出，5小时相遇．客车每小时行80千米，货车每小时行90千米．甲、乙两地相距多少千米？
<gadget id="calculator">80 + 90</gadget>
<output>170</output>

<gadget id="calculator">170 * 5</gadget>
<output>850</output>

<result>850</result>