Two cars A and B set off from Nanjing and Shanghai at the same time respectively, and drive opposite each other on the Shanghai-Nanjing Expressway. Car A travels 103 kilometers per hour, and car B travels 112 kilometers per hour. After 1.2 hours, the distance between the two cars is still 16.08 kilometers. How long is the Shanghai-Nanjing Expressway in kilometers?
甲乙两辆汽车分别从南京和上海同时出发，在沪宁高速公路上相对而行．甲车每小时行103千米，乙车每小时行112千米，经过1.2小时两车还相距16.08千米．沪宁高速公路全长多少千米？
<gadget id="calculator">103 + 112</gadget>
<output>215</output>

<gadget id="calculator">215 * 1.2</gadget>
<output>258</output>

<gadget id="calculator">258 + 16.08</gadget>
<output>274.08</output>

<result>274.08</result>