Number suffixes
Package:
ARITHMETIC_PACKAGE. Registered bycreateEngine(); for a slimmer engine, register it explicitly (see choosing packages).
A suffix is a single letter that stands in for a run of zeros, so a large round
number can be written the short way people say it: k for thousand, M for
million, B (or G) for billion, and T for trillion. The letter attaches to
the number: 2.5k is 2,500, but 2.5 k with a space reads k as an ordinary
name.
2.5k // 2,5003M // 3,000,0005B // 5,000,000,0002T // 2,000,000,000,000