(300,000 km/s) x (3,600 sec/hr) x (3 hrs) = 3,240,000,000 km.
(That's 3.24 x 10⁹ km.)
(That's to the moon and back about 4,230 times.)
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The math above is bullet-proof and air-tight.
The reason for the whacky answer is the fact that
the fastest train in the world does not move at
anywhere near 300,000 km/sec. That number
is the speed of light, for gosh sakes !