...As in other calculators, basic math can be performed too, with the +,-,*,/,%,^ operators, in between numbers. Setting the Scale allows for more decimals to be displayed. Also, about 65 Statistical Calculations can be performed by choosing an option from the More Stats List Box.
To install the program locally through the terminal, three steps are needed :
1. cd ~/Downloads ( folder name containing the download )
2. sudo dpkg -i quickcal_2.1-1_all.deb
3. sudo apt-get -f install
This is to fetch the dependencies that it has. Now, run the Quickcal program through your application menu / dashboard.