Convert from dekameter to ri [Japan]

Unit Definition (dekameter)
The dekameter or decameter is a common metric unit of distance equal to 10 meters (about 32.8084 feet).

Unit Definition (ri [Japan])
The ri is a traditional Japanese unit of distance, sometimes called the Japanese league because it is of similar length to the European league. The ri equals 2160 ken or 12 960 shaku (the shaku being the Japanese equivalent of the foot). This is about 3927 meters or 2.44 statute miles.