Update readme.md

zhifu gao

2023-08-08 8610bb509d6b643ef7ccca636dac3dca658e21e9

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