base: Even better, use the SI Symbols for the Names of large Numbers for number2human()

In GitLab by @markuslf on Jun 2, 2021, 14:40

According to https://en.wikipedia.org/w/index.php?title=Names_of_large_numbers&section=5#Extensions_of_the_standard_dictionary_numbers

* M for Million
* G for Miiliard (Traditional European (Peletier) (long scale)) and Billion (US, Canada and modern British (short scale))
etc.