We look at the division of 81715057 by 849 
The aim is to understand the frequency of 849 in 81715057.

On to step 1:
8 divided by 849 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 849

Moving on to step 2:
The number 849 fits into 81 0 times, leaving a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Take the next digit (7) from the dividend and append it to 81, then repeat: 817 / 849

On to step 3:
When dividing 817 by 849, we get 0 with a remainder of 817.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 817 after subtracting 0 from 817.
Append the next digit (1) from the dividend to 817 and continue with: 8171 / 849

Moving on to step 4:
When dividing 8171 by 849, we get 9 with a remainder of 530.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 530 after subtracting 7641 from 8171.
Append the next digit (5) from the dividend to 530 and continue with: 5305 / 849

Step 5:
5305 divided by 849 is 6 with a remainder of 211.
Use 6 as the next digit of our solution. 
Result so far: 96.0
Subtract 5094 from 5305 to get 211.
Fetch the next digit (0) from the dividend, attach it to 211 and continue: 2110 / 849

Step 6:
849 can be fit into 2110 2 times, resulting in a remainder of 412.
Put 2 as the next digit of the answer. 
Result so far: 962.0
If we subtract 1698 from 2110, we get 412.
Fetch the next digit (5) from the dividend, attach it to 412 and continue: 4125 / 849

Step 7:
4125 divided by 849 is 4 with a remainder of 729.
Write down 4 as next digit of the result. 
Result so far: 9624.0
Subtract 3396 from 4125 to get 729.
Include the next digit (7) from the dividend after 729, then repeat: 7297 / 849

Step 8:
If we divide 7297 by 849, we get 8 and a remainder of 505.
Use 8 as the next digit of our solution. 
Result so far: 96248.0
Subtracting 6792 from 7297 leaves us with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Moving on to step 9:
849 goes into 5050 5 times with a remainder of 805.
The number 5 becomes the next digit in our result. 
Result so far: 96248.5
Deduct 4245 from 5050 and we're left with 805.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8050, and continue the process.

Moving on to step 10:
849 goes into 8050 9 times with a remainder of 409.
Record the quotient 9 as the next digit in the result. 
Result so far: 96248.59
The remainder is 409 after subtracting 7641 from 8050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Advancing to step 11:
When dividing 4090 by 849, we get 4 with a remainder of 694.
The number 4 becomes the next digit in our result. 
Result so far: 96248.594
If we subtract 3396 from 4090, we get 694.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6940, and continue the process.

On to step 12:
849 goes into 6940 8 times with a remainder of 148.
The number 8 becomes the next digit in our result. 
Result so far: 96248.5948
If we subtract 6792 from 6940, we get 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 13:
1480 divided by 849 is 1 with a remainder of 631.
Use 1 as the next digit of our solution. 
Result so far: 96248.59481
Subtracting 849 from 1480 leaves us with 631.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6310, and continue the process.

Advancing to step 14:
849 can be fit into 6310 7 times, resulting in a remainder of 367.
Write down 7 as next digit of the result. 
Result so far: 96248.594817
Subtracting 5943 from 6310 leaves us with 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Advancing to step 15:
3670 divided by 849 is 4 with a remainder of 274.
Write down 4 as next digit of the result. 
Result so far: 96248.5948174
The remainder is 274 after subtracting 3396 from 3670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Going ahead to step 16:
849 goes into 2740 3 times with a remainder of 193.
The next digit of our result is 3. 
Result so far: 96248.59481743
If we take 2547 away from 2740, we end up with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Our division results in 96248.59481743 with a remaining 1.93e-07.