Car A and car B drive on Shanghai-Nanjing Road and start from the same place at the same time in opposite directions. Car A travels 73 kilometers per hour, and car B travels 87 kilometers per hour. How many kilometers are the distance between the two cars after three hours?
甲车和乙车载沪宁路上，从同一地点同时向相反方向出发，甲车每小时行73千米，乙车每小时行87千米，三小时后两车相距多少千米？
<gadget id="calculator">73 + 87</gadget>
<output>160</output>

<gadget id="calculator">160 * 3</gadget>
<output>480</output>

<result>480</result>