We look at the division of 98236139 by 903 
The aim is to understand the frequency of 903 in 98236139.

Going ahead to step 1:
When dividing 9 by 903, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 903

Step 2:
When dividing 98 by 903, we get 0 with a remainder of 98.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 98 to get 98.
Take the next digit (2) from the dividend and append it to 98, then repeat: 982 / 903

Step 3:
903 goes into 982 1 times with a remainder of 79.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 903 from 982 to get 79.
Fetch the next digit (3) from the dividend, attach it to 79 and continue: 793 / 903

Advancing to step 4:
If we divide 793 by 903, we get 0 and a remainder of 793.
Write down 0 as next digit of the result. 
Result so far: 10.0
Deduct 0 from 793 and we're left with 793.
Include the next digit (6) from the dividend after 793, then repeat: 7936 / 903

Advancing to step 5:
903 goes into 7936 8 times with a remainder of 712.
The number 8 becomes the next digit in our result. 
Result so far: 108.0
Subtract 7224 from 7936 to get 712.
Include the next digit (1) from the dividend after 712, then repeat: 7121 / 903

On to step 6:
When dividing 7121 by 903, we get 7 with a remainder of 800.
Put 7 as the next digit of the answer. 
Result so far: 1087.0
If we subtract 6321 from 7121, we get 800.
Append the next digit (3) from the dividend to 800 and continue with: 8003 / 903

Step 7:
903 goes into 8003 8 times with a remainder of 779.
Use 8 as the next digit of our solution. 
Result so far: 10878.0
Subtract 7224 from 8003 to get 779.
Fetch the next digit (9) from the dividend, attach it to 779 and continue: 7799 / 903

Going ahead to step 8:
903 can be fit into 7799 8 times, resulting in a remainder of 575.
Put 8 as the next digit of the answer. 
Result so far: 108788.0
Subtracting 7224 from 7799 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

On to step 9:
When dividing 5750 by 903, we get 6 with a remainder of 332.
The next digit of our result is 6. 
Result so far: 108788.6
Subtract 5418 from 5750 to get 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Let's proceed to step 10:
If we divide 3320 by 903, we get 3 and a remainder of 611.
The next digit of our result is 3. 
Result so far: 108788.63
The remainder is 611 after subtracting 2709 from 3320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Advancing to step 11:
903 goes into 6110 6 times with a remainder of 692.
Record the quotient 6 as the next digit in the result. 
Result so far: 108788.636
If we subtract 5418 from 6110, we get 692.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6920, and continue the process.

Advancing to step 12:
If we divide 6920 by 903, we get 7 and a remainder of 599.
Record the quotient 7 as the next digit in the result. 
Result so far: 108788.6367
The remainder is 599 after subtracting 6321 from 6920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5990, and continue the process.

Moving on to step 13:
903 goes into 5990 6 times with a remainder of 572.
Use 6 as the next digit of our solution. 
Result so far: 108788.63676
If we take 5418 away from 5990, we end up with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Advancing to step 14:
When dividing 5720 by 903, we get 6 with a remainder of 302.
The next digit of our result is 6. 
Result so far: 108788.636766
Subtract 5418 from 5720 to get 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

The final result is 108788.636766 with a remainder of 3.02e-05.