Car A departs from City A to City B, and travels 60 kilometers per hour. After half an hour, Car B departs from City B and heads for City A. The speed is (5/6) that of Car A. From Car A to two The car met a total of 4.5 hours. How many kilometers are there between A and B?
甲车由A城出发开往B城，每小时行60千米，半小时后乙车从B城出发，开往A城，速度是甲车的(5/6)，从甲车出发到两车相遇共经4.5小时．A、B两城相距多少千米？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">4.5 - 0.5</gadget>
<output>4</output>

<gadget id="calculator">60 * (5/6) * 4</gadget>
<output>200</output>

<gadget id="calculator">60 * 4.5</gadget>
<output>270</output>

<gadget id="calculator">200 + 270</gadget>
<output>470</output>

<result>470</result>