This video shows a visualisation on counting.
Every column of boxes represents a digit of a nonnegative integer (0, 1, 2, 3, …). Before increasing from one integer to the next, the changes to be made are shown. Blue boxes will appear, yellow boxes will go.

For lots of examples of multiplying two numbers with steps see https://www.youtube.com/watch?v=d4HSNwDU14o

Table of contents
00:00:00 0 – 9
00:00:13 10 – 19
00:00:23 20 – 29
00:00:33 30 – 39
00:00:43 40 – 49
00:00:53 50 – 59
00:01:03 60 – 69
00:01:13 70 – 79
00:01:23 80 – 89
00:01:33 90 – 99
00:01:43 100 – 199
00:03:23 200 – 299
00:05:03 300 – 499
00:06:43 400 – 599
00:08:23 500 – 699
00:10:03 600 – 799
00:11:43 700 – 899
00:13:23 800 – 999
00:15:03 900 – 1099
00:16:43 1000 – 1199
00:20:03 1200 – 1399
00:23:23 1400 – 1599
00:26:43 1600 – 1799
00:30:03 1800 – 1999
00:33:23 2000 – 2199
00:36:43 2200 – 2399
00:40:03 2400 – 2599
00:43:23 2600 – 2799
00:46:43 2800 – 2999
00:50:03 3000 – 3199
00:53:23 3200 – 3399
00:56:43 3400 – 3599
01:00:03 3600 – 3799
01:03:23 3800 – 3999
01:06:43 4000 – 4199
01:10:03 4200 – 4399
01:13:23 4400 – 4599
01:16:43 4600 – 4799
01:20:03 4800 – 4999
01:23:23 5000 – 5199
01:26:43 5200 – 5399
01:30:03 5400 – 5599
01:33:23 5600 – 5799
01:36:43 5800 – 5999
01:40:03 6000 – 6199
01:43:23 6200 – 6399
01:46:43 6400 – 6599
01:50:03 6600 – 6799
01:53:23 6800 – 6999
01:56:43 7000 – 7199
02:00:03 7200 – 7399
02:03:23 7400 – 7599
02:06:43 7600 – 7799
02:10:03 7800 – 7999
02:13:23 8000 – 8199
02:16:43 8200 – 8399
02:20:03 8400 – 8599
02:23:23 8600 – 8799
02:26:43 8800 – 8999
02:30:03 9000 – 9199
02:33:23 9200 – 9399
02:36:43 9400 – 9599
02:40:03 9600 – 9799
02:43:23 9800 – 9999
02:46:43 10000 – 10199
02:50:03 10200 – 10399
02:53:23 10400 – 10599
02:56:43 10600 – 10799
03:00:03 10800 – 10999
03:03:23 11000 – 11199
03:06:43 11200 – 11399
03:10:03 11400 – 11599
03:13:23 11600 – 11799
03:16:43 11800 – 11999
03:20:03 12000 – 12199
03:23:23 12200 – 12399
03:26:43 12400 – 12599
03:30:03 12600 – 12799
03:33:23 12800 – 12999
03:36:43 13000 – 13199
03:40:03 13200 – 13399
03:43:23 13400 – 13599
03:46:43 13600 – 13799
03:50:03 13800 – 13999