Convert from Paris foot to fermi

Unit Definition (Paris foot)
The Paris foot is an English name for the French royal foot (pied de roi).

Unit Definition (fermi)
The Fermi was a metric unit of distance formerly used in atomic physics. One Fermi equals 10e-15 meter, or 1 femtometer. The unit was named after Enrico Fermi (1901-1954), the Italian-American physicist who built the first nuclear reactor.