Binary package “bc” in ubuntu maverick

The GNU bc arbitrary precision calculator language

 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