Convert from stride [great] to league [nautical]

Unit Definition (stride [great])
Distance between consecutive prints of the same foot in a track, measured from the same point on each foot.

Unit Definition (league [nautical])
The nautical league is approximately equal to three nautical miles, 1/20 degree, or 5556 meters (metres). Note that it is not equivalent to the portugese, french and spanish measurements of the league. The nautical league is also different from the league defined on land.