数字系统是以一致的方式使用数字或符号来表示数字的数学符号。
1 sept = 1 utf8
1 utf8 = 1 sept
例子:
将15 基地7（9月）转换为UTF-8：
15 sept = 15 utf8
| 基地7（9月） | UTF-8 |
|---|---|
| 0.01 sept | 0.01 utf8 |
| 0.1 sept | 0.1 utf8 |
| 1 sept | 1 utf8 |
| 2 sept | 2 utf8 |
| 3 sept | 3 utf8 |
| 5 sept | 5 utf8 |
| 10 sept | 10 utf8 |
| 20 sept | 20 utf8 |
| 30 sept | 30 utf8 |
| 40 sept | 40 utf8 |
| 50 sept | 50 utf8 |
| 60 sept | 60 utf8 |
| 70 sept | 70 utf8 |
| 80 sept | 80 utf8 |
| 90 sept | 90 utf8 |
| 100 sept | 100 utf8 |
| 250 sept | 250 utf8 |
| 500 sept | 500 utf8 |
| 750 sept | 750 utf8 |
| 1000 sept | 1,000 utf8 |
| 10000 sept | 10,000 utf8 |
| 100000 sept | 100,000 utf8 |
规则