Let's divide 12875549 by 870
The aim is to understand the frequency of 870 in 12875549.

Advancing to step 1:
870 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 870

Advancing to step 2:
When dividing 12 by 870, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 870

On to step 3:
The number 870 fits into 128 0 times, leaving a remainder of 128.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 128, we end up with 128.
Grab the next digit (7) from the dividend, add it to 128, then carry on: 1287 / 870

Moving on to step 4:
1287 divided by 870 is 1 with a remainder of 417.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 417 after subtracting 870 from 1287.
Bring next digit (5) of the dividend behind the 417 and repeat the process: 4175 / 870

On to step 5:
4175 divided by 870 is 4 with a remainder of 695.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 3480 from 4175 and we're left with 695.
Bring next digit (5) of the dividend behind the 695 and repeat the process: 6955 / 870

Moving on to step 6:
870 goes into 6955 7 times with a remainder of 865.
Put 7 as the next digit of the answer. 
Result so far: 147.0
Subtracting 6090 from 6955 leaves us with 865.
Append the next digit (4) from the dividend to 865 and continue with: 8654 / 870

Step 7:
The number 870 fits into 8654 9 times, leaving a remainder of 824.
Use 9 as the next digit of our solution. 
Result so far: 1479.0
The remainder is 824 after subtracting 7830 from 8654.
Fetch the next digit (9) from the dividend, attach it to 824 and continue: 8249 / 870

Going ahead to step 8:
If we divide 8249 by 870, we get 9 and a remainder of 419.
The number 9 becomes the next digit in our result. 
Result so far: 14799.0
The remainder is 419 after subtracting 7830 from 8249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

On to step 9:
870 can be fit into 4190 4 times, resulting in a remainder of 710.
Put 4 as the next digit of the answer. 
Result so far: 14799.4
If we take 3480 away from 4190, we end up with 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Going ahead to step 10:
When dividing 7100 by 870, we get 8 with a remainder of 140.
Record the quotient 8 as the next digit in the result. 
Result so far: 14799.48
The remainder is 140 after subtracting 6960 from 7100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 11:
870 goes into 1400 1 times with a remainder of 530.
The number 1 becomes the next digit in our result. 
Result so far: 14799.481
Subtracting 870 from 1400 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 12:
When dividing 5300 by 870, we get 6 with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 14799.4816
Subtracting 5220 from 5300 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 13:
800 divided by 870 is 0 with a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 14799.4816
The remainder is 800 after subtracting 0 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Advancing to step 14:
If we divide 8000 by 870, we get 9 and a remainder of 170.
The number 9 becomes the next digit in our result. 
Result so far: 14799.481609
Subtracting 7830 from 8000 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 15:
870 can be fit into 1700 1 times, resulting in a remainder of 830.
Record the quotient 1 as the next digit in the result. 
Result so far: 14799.4816091
Subtracting 870 from 1700 leaves us with 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

On to step 16:
8300 divided by 870 is 9 with a remainder of 470.
The next digit of our result is 9. 
Result so far: 14799.48160919
The remainder is 470 after subtracting 7830 from 8300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Our division results in 14799.48160919 with a remaining 4.7e-07.