How to install:

1. curl -sL https://deb.nodesource.com/setup_11.x | sudo -E bash -
2. sudo apt-get install -y nodejs
3. repeat after video

How to run brain-even after global install:

1. repeat after video

How to run brain-calc after local install:

1. repeat after video

How to run brain-gcd after global install:

1. repeat after video

How to run brain-progression after global install:

1. repeat after video

How to run brain-prime after global install:

1. repeat after video