bc: bc 6.2.4 (command-line calculator)  
bc:  
bc: bc is an arbitrary precision numeric processing language. Syntax is 
bc: similar to C, but differs in many substantial areas. It supports 
bc: interactive execution of statements. bc is a utility included in the POSIX 
bc: P1003.2/D11 draft standard.  
bc: 
bc: This is Gavin Howard's bc, not GNU bc.
bc: https://git.yzena.com/gavin/
bc: 
bc: It is supposedly fully-compatible with GNU bc.

