Update README.md

zhifu gao

2023-04-27 a01a6ea09ad9b99c7002059e8b11e9bd3f2bb6be

1
2
3
4
5
6
7
8
9
10
M    million
MLN    million
m    million
mln    million
B    billion
b    billion
BN    billion
bn    billion
K    thousand
k    thousand