Did you know? Length of the Epsom Derby horse race (2.4 km) is 20 thousand x Diameter of a CD / DVD (120 mm)
Mass of a Boeing 747-400 airliner (max takeoff weight) (397,000 kg)
/fact/mass-of-a-boeing-747-400-airliner-max-takeoff-weight
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If this was a standard unit ...