gcalctool software package provides gnome-calculator is a powerful graphical calculator for GNOME (transitional package), you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install gcalctool
gcalctool is installed in your system.
Make ensure the gcalctool package were installed using the commands given below,
$ sudo dpkg-query -l | grep gcalctool *
You will get with gcalctool package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Mathematics |
| Package | gcalctool |
| Version | 1:3.10.2-0ubuntu1 |
| Description | gnome-calculator is a powerful graphical calculator for GNOME (transitional package) |
| Sub Section | math |