A train of passenger cars and a train of freight cars are traveling in the same direction, with the freight cars in front and the passenger cars behind. It is known that it takes 30 seconds for a passenger car to pass through a 460-meter-long tunnel, and 28 seconds to pass through a 410-meter-long tunnel. It is also known that the truck is 160 meters long and travels 54 kilometers per hour. I would like to ask: How many seconds does it take for the passenger car to leave the train from catching up to?
一列客车和一列货车同向而行，货车在前，客车在后．已知客车通过460米长的隧道用30秒，通过410米长的隧道用28秒．又已知货车长160米，每小时行驶54千米．请问：客车从追上到离开这列货车需要多少秒？
<gadget id="calculator">460 - 410</gadget>
<output>50</output>

<gadget id="calculator">30 - 28</gadget>
<output>2</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">25 * 30</gadget>
<output>750</output>

<gadget id="calculator">750 - 460</gadget>
<output>290</output>

<gadget id="calculator">290 + 160</gadget>
<output>450</output>

<gadget id="calculator">25 - 15</gadget>
<output>10</output>

<gadget id="calculator">450 / 10</gadget>
<output>45</output>

<result>45</result>