Convert from yottameter to league [nautical]

Unit Definition (yottameter)
The yottametre (or yottameter), symbol: Ym, is a unit of distance. One yottametre is equal to 1x10+24 (1e+24) in scientific notation. Which is a very large distance. Note this is different from a yoctometre, which is 1e-24, a very small distance.

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.