Let's divide 72531187 by 863
The aim is to understand the frequency of 863 in 72531187.

Going ahead to step 1:
When dividing 7 by 863, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 863

Advancing to step 2:
863 goes into 72 0 times with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Bring next digit (5) of the dividend behind the 72 and repeat the process: 725 / 863

On to step 3:
The number 863 fits into 725 0 times, leaving a remainder of 725.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 725, we get 725.
Take the next digit (3) from the dividend and append it to 725, then repeat: 7253 / 863

Let's proceed to step 4:
When dividing 7253 by 863, we get 8 with a remainder of 349.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 349 after subtracting 6904 from 7253.
Append the next digit (1) from the dividend to 349 and continue with: 3491 / 863

Moving on to step 5:
When dividing 3491 by 863, we get 4 with a remainder of 39.
The number 4 becomes the next digit in our result. 
Result so far: 84.0
Subtract 3452 from 3491 to get 39.
Append the next digit (1) from the dividend to 39 and continue with: 391 / 863

Going ahead to step 6:
863 can be fit into 391 0 times, resulting in a remainder of 391.
The number 0 becomes the next digit in our result. 
Result so far: 840.0
Deduct 0 from 391 and we're left with 391.
Include the next digit (8) from the dividend after 391, then repeat: 3918 / 863

Step 7:
If we divide 3918 by 863, we get 4 and a remainder of 466.
Use 4 as the next digit of our solution. 
Result so far: 8404.0
Deduct 3452 from 3918 and we're left with 466.
Include the next digit (7) from the dividend after 466, then repeat: 4667 / 863

Moving on to step 8:
When dividing 4667 by 863, we get 5 with a remainder of 352.
Write down 5 as next digit of the result. 
Result so far: 84045.0
The remainder is 352 after subtracting 4315 from 4667.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 9:
If we divide 3520 by 863, we get 4 and a remainder of 68.
Put 4 as the next digit of the answer. 
Result so far: 84045.4
If we take 3452 away from 3520, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Going ahead to step 10:
863 can be fit into 680 0 times, resulting in a remainder of 680.
Write down 0 as next digit of the result. 
Result so far: 84045.4
Subtract 0 from 680 to get 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 11:
863 can be fit into 6800 7 times, resulting in a remainder of 759.
The number 7 becomes the next digit in our result. 
Result so far: 84045.407
Deduct 6041 from 6800 and we're left with 759.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7590, and continue the process.

Going ahead to step 12:
The number 863 fits into 7590 8 times, leaving a remainder of 686.
Write down 8 as next digit of the result. 
Result so far: 84045.4078
Subtract 6904 from 7590 to get 686.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6860, and continue the process.

On to step 13:
When dividing 6860 by 863, we get 7 with a remainder of 819.
Use 7 as the next digit of our solution. 
Result so far: 84045.40787
Deduct 6041 from 6860 and we're left with 819.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8190, and continue the process.

Moving on to step 14:
The number 863 fits into 8190 9 times, leaving a remainder of 423.
Write down 9 as next digit of the result. 
Result so far: 84045.407879
Subtracting 7767 from 8190 leaves us with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Moving on to step 15:
863 goes into 4230 4 times with a remainder of 778.
Write down 4 as next digit of the result. 
Result so far: 84045.4078794
If we take 3452 away from 4230, we end up with 778.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7780, and continue the process.

Advancing to step 16:
The number 863 fits into 7780 9 times, leaving a remainder of 13.
Write down 9 as next digit of the result. 
Result so far: 84045.40787949
Deduct 7767 from 7780 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 84045.40787949 with a remaining 1.3e-08.