Convert from military pace to milla [Spanish]

Unit Definition (military pace)
The length of a single step in marching (taken to be 30 inches for quick time or 36 inches for double time).

Unit Definition (milla [Spanish])
The milla is a traditional Spanish mile, equal to 5000 pies (Spanish feet) or 8 estadios. This is about 1392 meters, 4567 feet, or 0.865 statute mile.