Two cars start opposite each other from two places 580 kilometers apart. Car A drives 1.2 hours before car B starts. If car A travels 50 kilometers per hour and car B travels 80 kilometers per hour, How many hours later will the two cars meet?
两辆汽车分别从相距580千米的两地相对开出，甲汽车先行1.2小时后，乙汽车才出发，如果甲汽车每小时行50千米，乙汽车每小时行80千米，乙汽车开出几小时后两车相遇？
<gadget id="calculator">50 * 1.2</gadget>
<output>60</output>

<gadget id="calculator">580 - 60</gadget>
<output>520</output>

<gadget id="calculator">50 + 80</gadget>
<output>130</output>

<gadget id="calculator">520 / 130</gadget>
<output>4</output>

<result>4</result>