308117 ÷ 91 
The aim is to understand the frequency of 91 in 308117.

Going ahead to step 1:
91 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 91

Going ahead to step 2:
91 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Grab the next digit (8) from the dividend, add it to 30, then carry on: 308 / 91

Step 3:
If we divide 308 by 91, we get 3 and a remainder of 35.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 273 from 308, we get 35.
Take the next digit (1) from the dividend and append it to 35, then repeat: 351 / 91

Going ahead to step 4:
91 can be fit into 351 3 times, resulting in a remainder of 78.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
Subtract 273 from 351 to get 78.
Include the next digit (1) from the dividend after 78, then repeat: 781 / 91

Let's proceed to step 5:
91 can be fit into 781 8 times, resulting in a remainder of 53.
The number 8 becomes the next digit in our result. 
Result so far: 338.0
If we subtract 728 from 781, we get 53.
Include the next digit (7) from the dividend after 53, then repeat: 537 / 91

Advancing to step 6:
When dividing 537 by 91, we get 5 with a remainder of 82.
Record the quotient 5 as the next digit in the result. 
Result so far: 3385.0
Deduct 455 from 537 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 7:
When dividing 820 by 91, we get 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 3385.9
Subtracting 819 from 820 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
The number 91 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 3385.9
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
The number 91 fits into 100 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 3385.901
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
91 goes into 90 0 times with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 3385.901
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 11:
91 goes into 900 9 times with a remainder of 81.
The next digit of our result is 9. 
Result so far: 3385.90109
Subtract 819 from 900 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 12:
91 goes into 810 8 times with a remainder of 82.
The number 8 becomes the next digit in our result. 
Result so far: 3385.901098
If we take 728 away from 810, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 13:
91 can be fit into 820 9 times, resulting in a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 3385.9010989
Deduct 819 from 820 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
91 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 3385.9010989
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 3385.9010989 and a remainder of 1e-08.