Install galculator by entering the following commands in the terminal:
sudo apt update sudo apt install galculator
Description:
scientific calculator
galculator is a scientific calculator. It supports different number bases (DEC/HEX/OCT/BIN) and angles bases (DEG/RAD/GRAD) and features a wide range of mathematical (basic arithmetic operations, trigonometric functions, etc) and other useful functions (memory, etc) at the moment. galculator can be used in algebraic mode as well as in Reverse Polish Notation (RPN).
Homepage: http://galculator.mnim.org/
Version: 2.1.4-1build1
Section: universe/math