Two passenger and freight trains depart from places A and B at the same time respectively, drive towards each other, and meet each other 4.5 hours later. The passenger car travels 56 kilometers per hour and the truck travels 60 kilometers per hour. How many kilometers are there between A and B?
客、货两车分别从甲、乙两地同时出发，相向而行，4.5小时后相遇．客车每小时行56千米，货车每小时行60千米．甲、乙两地相距多少千米？
<gadget id="calculator">56 + 60</gadget>
<output>116</output>

<gadget id="calculator">116 * 4.5</gadget>
<output>522</output>

<result>522</result>