bc 1.06.95-6 (amd64 binary) in ubuntu saucy

 GNU bc is an interactive algebraic language with arbitrary precision which
 follows the POSIX 1003.2 draft standard, with several extensions including
 multi-character variable names, an `else' statement and full Boolean
 expressions. GNU bc does not require the separate GNU dc program.
 Home page: http://directory.fsf.org/GNU/bc.html