euler software package provides interactive mathematical programming environment, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install euler
euler is installed in your system.
Make ensure the euler package were installed using the commands given below,
$ sudo dpkg-query -l | grep euler *
You will get with euler package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Mathematics |
| Package | euler |
| Version | 1.61.0-11 |
| Description | interactive mathematical programming environment |
| Sub Section | Math |