We look at the division of 8686568 by 819 
The aim is to understand the frequency of 819 in 8686568.

Step 1:
819 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 819

Going ahead to step 2:
If we divide 86 by 819, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Grab the next digit (8) from the dividend, add it to 86, then carry on: 868 / 819

Let's proceed to step 3:
When dividing 868 by 819, we get 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 819 from 868 and we're left with 49.
Bring next digit (6) of the dividend behind the 49 and repeat the process: 496 / 819

Moving on to step 4:
The number 819 fits into 496 0 times, leaving a remainder of 496.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 496 and we're left with 496.
Append the next digit (5) from the dividend to 496 and continue with: 4965 / 819

Let's proceed to step 5:
819 can be fit into 4965 6 times, resulting in a remainder of 51.
Write down 6 as next digit of the result. 
Result so far: 106.0
If we take 4914 away from 4965, we end up with 51.
Append the next digit (6) from the dividend to 51 and continue with: 516 / 819

Step 6:
When dividing 516 by 819, we get 0 with a remainder of 516.
The next digit of our result is 0. 
Result so far: 1060.0
Subtract 0 from 516 to get 516.
Fetch the next digit (8) from the dividend, attach it to 516 and continue: 5168 / 819

Moving on to step 7:
5168 divided by 819 is 6 with a remainder of 254.
The number 6 becomes the next digit in our result. 
Result so far: 10606.0
Subtracting 4914 from 5168 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 8:
2540 divided by 819 is 3 with a remainder of 83.
Put 3 as the next digit of the answer. 
Result so far: 10606.3
Subtracting 2457 from 2540 leaves us with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 9:
The number 819 fits into 830 1 times, leaving a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 10606.31
The remainder is 11 after subtracting 819 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 10:
819 can be fit into 110 0 times, resulting in a remainder of 110.
The next digit of our result is 0. 
Result so far: 10606.31
Subtract 0 from 110 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 11:
819 can be fit into 1100 1 times, resulting in a remainder of 281.
The next digit of our result is 1. 
Result so far: 10606.3101
Subtracting 819 from 1100 leaves us with 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

Moving on to step 12:
819 goes into 2810 3 times with a remainder of 353.
Put 3 as the next digit of the answer. 
Result so far: 10606.31013
If we subtract 2457 from 2810, we get 353.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Going ahead to step 13:
3530 divided by 819 is 4 with a remainder of 254.
The next digit of our result is 4. 
Result so far: 10606.310134
If we subtract 3276 from 3530, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Moving on to step 14:
819 can be fit into 2540 3 times, resulting in a remainder of 83.
The next digit of our result is 3. 
Result so far: 10606.3101343
If we take 2457 away from 2540, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 15:
When dividing 830 by 819, we get 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 10606.31013431
The remainder is 11 after subtracting 819 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Our division results in 10606.31013431 with a remaining 1.1e-08.