Let's divide 183812 by 91
The aim is to understand the frequency of 91 in 183812.

Going ahead to step 1:
If we divide 1 by 91, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 91

Going ahead to step 2:
18 divided by 91 is 0 with a remainder of 18.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (3) of the dividend behind the 18 and repeat the process: 183 / 91

Going ahead to step 3:
91 goes into 183 2 times with a remainder of 1.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 1 after subtracting 182 from 183.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 91

Step 4:
When dividing 18 by 91, we get 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we subtract 0 from 18, we get 18.
Grab the next digit (1) from the dividend, add it to 18, then carry on: 181 / 91

Going ahead to step 5:
91 goes into 181 1 times with a remainder of 90.
Use 1 as the next digit of our solution. 
Result so far: 201.0
Subtracting 91 from 181 leaves us with 90.
Append the next digit (2) from the dividend to 90 and continue with: 902 / 91

Let's proceed to step 6:
91 goes into 902 9 times with a remainder of 83.
Record the quotient 9 as the next digit in the result. 
Result so far: 2019.0
If we take 819 away from 902, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 7:
When dividing 830 by 91, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 2019.9
If we take 819 away from 830, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 8:
If we divide 110 by 91, we get 1 and a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 2019.91
If we take 91 away from 110, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 9:
91 can be fit into 190 2 times, resulting in a remainder of 8.
The next digit of our result is 2. 
Result so far: 2019.912
The remainder is 8 after subtracting 182 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
91 can be fit into 80 0 times, resulting in a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 2019.912
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
The number 91 fits into 800 8 times, leaving a remainder of 72.
Use 8 as the next digit of our solution. 
Result so far: 2019.91208
If we subtract 728 from 800, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 12:
91 can be fit into 720 7 times, resulting in a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 2019.912087
Subtract 637 from 720 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 13:
When dividing 830 by 91, we get 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 2019.9120879
If we subtract 819 from 830, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 14:
91 goes into 110 1 times with a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 2019.91208791
If we subtract 91 from 110, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 2019.91208791, with a leftover of 1.9e-08.