We divide 819661 by 8
The aim is to understand the frequency of 8 in 819661.

Advancing to step 1:
8 can be fit into 8 1 times, resulting in a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 0 after subtracting 8 from 8.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 8

Let's proceed to step 2:
1 divided by 8 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 8

Moving on to step 3:
8 goes into 19 2 times with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 102.0
Deduct 16 from 19 and we're left with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 8

Let's proceed to step 4:
8 goes into 36 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 1024.0
If we take 32 away from 36, we end up with 4.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 8

Step 5:
8 goes into 46 5 times with a remainder of 6.
Write down 5 as next digit of the result. 
Result so far: 10245.0
Subtracting 40 from 46 leaves us with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 8

Advancing to step 6:
8 goes into 61 7 times with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 102457.0
Subtract 56 from 61 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 7:
8 can be fit into 50 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 102457.6
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.

Let's proceed to step 8:
8 goes into 20 2 times with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 102457.62
Deduct 16 from 20 and we're left 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.

Advancing to step 9:
40 divided by 8 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 102457.625
The remainder is 0 after subtracting 40 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 10:
When dividing 0 by 8, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 102457.625
Subtract 0 from 0 to 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.

Advancing to step 11:
0 divided by 8 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 102457.625
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.

Our division results in 102457.625 with a remaining 0.0.