Let's divide 720669 by 8
The aim is to understand the frequency of 8 in 720669.

Moving on to step 1:
7 divided by 8 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 8

On to step 2:
8 can be fit into 72 9 times, resulting in a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we subtract 72 from 72, we get 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 8

Let's proceed to step 3:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we subtract 0 from 0, we get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 8

Going ahead to step 4:
6 divided by 8 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 900.0
If we subtract 0 from 6, we get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 8

Moving on to step 5:
If we divide 66 by 8, we get 8 and a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 9008.0
Deduct 64 from 66 and we're left with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 8

Let's proceed to step 6:
29 divided by 8 is 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 90083.0
Deduct 24 from 29 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
50 divided by 8 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 90083.6
Subtracting 48 from 50 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
8 goes into 20 2 times with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 90083.62
Subtracting 16 from 20 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
The number 8 fits into 40 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 90083.625
If we take 40 away from 40, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
0 divided by 8 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 90083.625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
When dividing 0 by 8, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 90083.625
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 90083.625, with a leftover of 0.0.