We're dividing 903636 by 91 
The aim is to understand the frequency of 91 in 903636.

Going ahead to step 1:
9 divided by 91 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (0) from the dividend, attach it to 9 and continue: 90 / 91

Going ahead to step 2:
When dividing 90 by 91, we get 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Grab the next digit (3) from the dividend, add it to 90, then carry on: 903 / 91

Moving on to step 3:
903 divided by 91 is 9 with a remainder of 84.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 819 from 903 to get 84.
Include the next digit (6) from the dividend after 84, then repeat: 846 / 91

Moving on to step 4:
91 can be fit into 846 9 times, resulting in a remainder of 27.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
If we subtract 819 from 846, we get 27.
Bring next digit (3) of the dividend behind the 27 and repeat the process: 273 / 91

Going ahead to step 5:
91 goes into 273 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 993.0
The remainder is 0 after subtracting 273 from 273.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 91

Let's proceed to step 6:
91 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 9930.0
Deduct 0 from 6 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
The number 91 fits into 60 0 times, leaving a remainder of 60.
The next digit of our result is 0. 
Result so far: 9930.0
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 8:
600 divided by 91 is 6 with a remainder of 54.
Put 6 as the next digit of the answer. 
Result so far: 9930.06
If we take 546 away from 600, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 9:
540 divided by 91 is 5 with a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 9930.065
If we subtract 455 from 540, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Let's proceed to step 10:
When dividing 850 by 91, we get 9 with a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 9930.0659
Deduct 819 from 850 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
91 can be fit into 310 3 times, resulting in a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 9930.06593
If we take 273 away from 310, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 12:
370 divided by 91 is 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 9930.065934
If we take 364 away from 370, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
91 goes into 60 0 times with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 9930.065934
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 14:
When dividing 600 by 91, we get 6 with a remainder of 54.
Record the quotient 6 as the next digit in the result. 
Result so far: 9930.06593406
If we take 546 away from 600, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

In conclusion, the division gives 9930.06593406 with a balance of 5.4e-08.