Convert from dekameter to spat

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

Unit Definition (spat)
The spat is an informal unit of distance formerly used by astronomers. The spat is equal to the terameter (Tm, or 10E12 meters). This is equivalent to about 6.6846 astronomical units. The origin of this usage is not clear; "spat" may be an acronym for "space unit" or "space-time".