Древнерусский счёт
примеры быстрого умножения
7 years ago 00:02:27 194
5 years ago 00:02:27 11
4 years ago 00:03:02 32
6 years ago 00:02:12 60
4 years ago 00:02:44 15
4 years ago 00:04:23 8
2 years ago 00:05:56 3
4 years ago 00:08:19 21
4 years ago 00:05:14 3
2 years ago 00:09:18 3
4 years ago 00:05:21 22
2 years ago 00:02:38 2
2 years ago 00:03:52 20
2 years ago 00:02:36 1
6 months ago 01:13:32 12
3 years ago 00:03:08 1
2 years ago 00:05:02 2
2 years ago 00:01:54 3
1 year ago 00:01:36 1
4 years ago 02:46:29 8
3 years ago 00:02:31 1
11 months ago 01:39:37 15
3 years ago 00:05:29 2
8 months ago 00:09:42 1
