Define 0.4 Meaning

0.4
One of the most exciting plays in Los Angeles Lakers history features the remarkable fadeaway shot taken by Derek Fisher over San Antonio Spur Manu Ginobli with 0.4 seconds left to put them up 3-2 over the Spurs in the 2004 Western Conference Semi-Finals.

Jon: OMG, you see that shit?
Mark: Fisher hit that shit with 0.4 seconds? NO WAY
By Carmelita