pedestrian is walking on the road next to the railway line at a speed of 3 meters per second, and a freight train is coming towards him at a speed of 25 meters per second. It takes 11 seconds to pass the pedestrian. How long is the freight train in meters? ．
一个行人在沿铁路线旁的公路上以每秒3米的速度走着，一列货车以每秒25米的速度迎面开来，经过这个行人的身旁用了11秒，这列货车长多少米．
<gadget id="calculator">3 + 25</gadget>
<output>28</output>

<gadget id="calculator">28 * 11</gadget>
<output>308</output>

<result>308</result>