The numbers 864 to 870 in roman numerals
The right column shows how each roman numeral adds up to the total.
| 864 | = | DCCCLXIV | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 − 1 |
| 865 | = | DCCCLXV | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 |
| 866 | = | DCCCLXVI | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 + 1 |
| 867 | = | DCCCLXVII | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 + 1 + 1 |
| 868 | = | DCCCLXVIII | = | 500 + 100 + 100 + 100 + 50 + 10 + 5 + 1 + 1 + 1 |
| 869 | = | DCCCLXIX | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 − 1 |
| 870 | = | DCCCLXX | = | 500 + 100 + 100 + 100 + 50 + 10 + 10 |