bc software package provides The GNU bc arbitrary precision calculator language, you can install in your Debian 7 (Wheezy) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install bc
bc is installed in your system.
Make ensure the bc package were installed using the commands given below,
$ sudo dpkg-query -l | grep bc *
You will get with bc package name, version, architecture and description in a table
| Distro | Debian 7 wheezy |
| Section | Mathematics |
| Package | bc |
| Version | 1.06.95-2+b1 [amd64, sparc], 1 |
| Description | The GNU bc arbitrary precision calculator language |
| Sub Section | math |