We look at the division of 27082594 by 91 
The aim is to understand the frequency of 91 in 27082594.

Going ahead to step 1:
If we divide 2 by 91, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 91

Going ahead to step 2:
27 divided by 91 is 0 with a remainder of 27.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 27, we get 27.
Bring next digit (0) of the dividend behind the 27 and repeat the process: 270 / 91

Advancing to step 3:
When dividing 270 by 91, we get 2 with a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 182 away from 270, we end up with 88.
Append the next digit (8) from the dividend to 88 and continue with: 888 / 91

On to step 4:
If we divide 888 by 91, we get 9 and a remainder of 69.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
Subtract 819 from 888 to get 69.
Include the next digit (2) from the dividend after 69, then repeat: 692 / 91

Advancing to step 5:
If we divide 692 by 91, we get 7 and a remainder of 55.
The next digit of our result is 7. 
Result so far: 297.0
If we subtract 637 from 692, we get 55.
Fetch the next digit (5) from the dividend, attach it to 55 and continue: 555 / 91

Advancing to step 6:
When dividing 555 by 91, we get 6 with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 2976.0
Subtracting 546 from 555 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 91

On to step 7:
91 can be fit into 99 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 29761.0
If we subtract 91 from 99, we get 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 91

Step 8:
When dividing 84 by 91, we get 0 with a remainder of 84.
Record the quotient 0 as the next digit in the result. 
Result so far: 297610.0
Subtract 0 from 84 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 9:
91 can be fit into 840 9 times, resulting in a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 297610.9
If we subtract 819 from 840, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 10:
The number 91 fits into 210 2 times, leaving a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 297610.92
If we subtract 182 from 210, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
91 can be fit into 280 3 times, resulting in a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 297610.923
Subtract 273 from 280 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 12:
If we divide 70 by 91, we get 0 and a remainder of 70.
The next digit of our result is 0. 
Result so far: 297610.923
If we take 0 away from 70, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 13:
When dividing 700 by 91, we get 7 with a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 297610.92307
The remainder is 63 after subtracting 637 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 14:
When dividing 630 by 91, we get 6 with a remainder of 84.
Write down 6 as next digit of the result. 
Result so far: 297610.923076
If we take 546 away from 630, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 15:
When dividing 840 by 91, we get 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 297610.9230769
Subtract 819 from 840 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 16:
91 goes into 210 2 times with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 297610.92307692
Subtract 182 from 210 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 297610.92307692 with a remainder of 2.8e-08.