Wow funny thing I noticed today that I have been using NodeJS, in terminal for doing my calculations and arithmetic operations. Then I realized how I have always been using different methods and tools on my laptop to perform quick arithmetic calculations.
At start it was usual system calculator. Then I started to use Spreadsheet most of the time for performing calculations when I learned basic maths operations and functions available in spreadsheets. After sometime Google, became my favorite calculator for fast arithmetic operations.