Convert from cape rood to spat

Unit Definition (cape rood)
The cape rood is a traditional unit of distance in South Africa, equal to 12 Cape feet or 12.396 English feet (3.7783 meters).

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".