Let's divide 15255886 by 849
The aim is to understand the frequency of 849 in 15255886.

Advancing to step 1:
When dividing 1 by 849, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 849

Moving on to step 2:
If we divide 15 by 849, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 849

On to step 3:
152 divided by 849 is 0 with a remainder of 152.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 152 after subtracting 0 from 152.
Append the next digit (5) from the dividend to 152 and continue with: 1525 / 849

Moving on to step 4:
When dividing 1525 by 849, we get 1 with a remainder of 676.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 849 from 1525 leaves us with 676.
Append the next digit (5) from the dividend to 676 and continue with: 6765 / 849

On to step 5:
When dividing 6765 by 849, we get 7 with a remainder of 822.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtract 5943 from 6765 to get 822.
Fetch the next digit (8) from the dividend, attach it to 822 and continue: 8228 / 849

On to step 6:
When dividing 8228 by 849, we get 9 with a remainder of 587.
The next digit of our result is 9. 
Result so far: 179.0
Deduct 7641 from 8228 and we're left with 587.
Append the next digit (8) from the dividend to 587 and continue with: 5878 / 849

Step 7:
The number 849 fits into 5878 6 times, leaving a remainder of 784.
Put 6 as the next digit of the answer. 
Result so far: 1796.0
If we subtract 5094 from 5878, we get 784.
Bring next digit (6) of the dividend behind the 784 and repeat the process: 7846 / 849

On to step 8:
849 goes into 7846 9 times with a remainder of 205.
Record the quotient 9 as the next digit in the result. 
Result so far: 17969.0
The remainder is 205 after subtracting 7641 from 7846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Moving on to step 9:
When dividing 2050 by 849, we get 2 with a remainder of 352.
Put 2 as the next digit of the answer. 
Result so far: 17969.2
The remainder is 352 after subtracting 1698 from 2050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Going ahead to step 10:
The number 849 fits into 3520 4 times, leaving a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 17969.24
Deduct 3396 from 3520 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 11:
849 can be fit into 1240 1 times, resulting in a remainder of 391.
The number 1 becomes the next digit in our result. 
Result so far: 17969.241
Subtract 849 from 1240 to get 391.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3910, and continue the process.

Moving on to step 12:
When dividing 3910 by 849, we get 4 with a remainder of 514.
The next digit of our result is 4. 
Result so far: 17969.2414
If we subtract 3396 from 3910, we get 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Going ahead to step 13:
The number 849 fits into 5140 6 times, leaving a remainder of 46.
The next digit of our result is 6. 
Result so far: 17969.24146
The remainder is 46 after subtracting 5094 from 5140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 14:
If we divide 460 by 849, we get 0 and a remainder of 460.
Put 0 as the next digit of the answer. 
Result so far: 17969.24146
Subtract 0 from 460 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 15:
If we divide 4600 by 849, we get 5 and a remainder of 355.
Use 5 as the next digit of our solution. 
Result so far: 17969.2414605
If we subtract 4245 from 4600, we get 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Step 16:
If we divide 3550 by 849, we get 4 and a remainder of 154.
Use 4 as the next digit of our solution. 
Result so far: 17969.24146054
If we subtract 3396 from 3550, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

The final result is 17969.24146054 with a remainder of 1.54e-07.