We look at the division of 86665015 by 808 
The aim is to understand the frequency of 808 in 86665015.

Going ahead to step 1:
The number 808 fits into 8 0 times, leaving a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 808

Step 2:
When dividing 86 by 808, we get 0 with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 808

On to step 3:
If we divide 866 by 808, we get 1 and a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 58 after subtracting 808 from 866.
Include the next digit (6) from the dividend after 58, then repeat: 586 / 808

Moving on to step 4:
The number 808 fits into 586 0 times, leaving a remainder of 586.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 586 and we're left with 586.
Bring next digit (5) of the dividend behind the 586 and repeat the process: 5865 / 808

Step 5:
When dividing 5865 by 808, we get 7 with a remainder of 209.
Use 7 as the next digit of our solution. 
Result so far: 107.0
Subtracting 5656 from 5865 leaves us with 209.
Bring next digit (0) of the dividend behind the 209 and repeat the process: 2090 / 808

Advancing to step 6:
The number 808 fits into 2090 2 times, leaving a remainder of 474.
Record the quotient 2 as the next digit in the result. 
Result so far: 1072.0
If we subtract 1616 from 2090, we get 474.
Include the next digit (1) from the dividend after 474, then repeat: 4741 / 808

Step 7:
The number 808 fits into 4741 5 times, leaving a remainder of 701.
The next digit of our result is 5. 
Result so far: 10725.0
If we subtract 4040 from 4741, we get 701.
Bring next digit (5) of the dividend behind the 701 and repeat the process: 7015 / 808

Step 8:
808 can be fit into 7015 8 times, resulting in a remainder of 551.
Put 8 as the next digit of the answer. 
Result so far: 107258.0
Subtract 6464 from 7015 to get 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

On to step 9:
The number 808 fits into 5510 6 times, leaving a remainder of 662.
The next digit of our result is 6. 
Result so far: 107258.6
The remainder is 662 after subtracting 4848 from 5510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

Moving on to step 10:
6620 divided by 808 is 8 with a remainder of 156.
Write down 8 as next digit of the result. 
Result so far: 107258.68
Subtract 6464 from 6620 to get 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Advancing to step 11:
808 goes into 1560 1 times with a remainder of 752.
The next digit of our result is 1. 
Result so far: 107258.681
Subtracting 808 from 1560 leaves us with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Going ahead to step 12:
7520 divided by 808 is 9 with a remainder of 248.
The number 9 becomes the next digit in our result. 
Result so far: 107258.6819
If we subtract 7272 from 7520, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 13:
If we divide 2480 by 808, we get 3 and a remainder of 56.
The next digit of our result is 3. 
Result so far: 107258.68193
If we subtract 2424 from 2480, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Moving on to step 14:
The number 808 fits into 560 0 times, leaving a remainder of 560.
Write down 0 as next digit of the result. 
Result so far: 107258.68193
Deduct 0 from 560 and we're left with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Let's proceed to step 15:
If we divide 5600 by 808, we get 6 and a remainder of 752.
Record the quotient 6 as the next digit in the result. 
Result so far: 107258.6819306
Subtracting 4848 from 5600 leaves us with 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Advancing to step 16:
When dividing 7520 by 808, we get 9 with a remainder of 248.
Write down 9 as next digit of the result. 
Result so far: 107258.68193069
If we subtract 7272 from 7520, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

In conclusion, the division gives 107258.68193069 with a balance of 2.48e-07.