We divide 269828 by 91
The aim is to understand the frequency of 91 in 269828.

On to step 1:
When dividing 2 by 91, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 91

Moving on to step 2:
When dividing 26 by 91, we get 0 with a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 26, we end up with 26.
Include the next digit (9) from the dividend after 26, then repeat: 269 / 91

Going ahead to step 3:
The number 91 fits into 269 2 times, leaving a remainder of 87.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 87 after subtracting 182 from 269.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 91

Going ahead to step 4:
91 can be fit into 878 9 times, resulting in a remainder of 59.
Put 9 as the next digit of the answer. 
Result so far: 29.0
Subtract 819 from 878 to get 59.
Take the next digit (2) from the dividend and append it to 59, then repeat: 592 / 91

Going ahead to step 5:
The number 91 fits into 592 6 times, leaving a remainder of 46.
The next digit of our result is 6. 
Result so far: 296.0
If we take 546 away from 592, we end up with 46.
Grab the next digit (8) from the dividend, add it to 46, then carry on: 468 / 91

Step 6:
The number 91 fits into 468 5 times, leaving a remainder of 13.
Record the quotient 5 as the next digit in the result. 
Result so far: 2965.0
Subtract 455 from 468 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
130 divided by 91 is 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 2965.1
If we take 91 away from 130, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 8:
91 can be fit into 390 4 times, resulting in a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 2965.14
If we subtract 364 from 390, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 9:
When dividing 260 by 91, we get 2 with a remainder of 78.
The next digit of our result is 2. 
Result so far: 2965.142
If we subtract 182 from 260, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 10:
91 can be fit into 780 8 times, resulting in a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 2965.1428
Deduct 728 from 780 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 11:
If we divide 520 by 91, we get 5 and a remainder of 65.
The next digit of our result is 5. 
Result so far: 2965.14285
Deduct 455 from 520 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 12:
When dividing 650 by 91, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 2965.142857
If we take 637 away from 650, we end up 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.

Let's proceed to step 13:
The number 91 fits into 130 1 times, leaving a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 2965.1428571
Subtract 91 from 130 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 14:
If we divide 390 by 91, we get 4 and a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 2965.14285714
If we subtract 364 from 390, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

The final result is 2965.14285714 with a remainder of 2.6e-08.