We look at the division of 383385 by 91 
The aim is to understand the frequency of 91 in 383385.

Moving on to step 1:
91 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 91

On to step 2:
The number 91 fits into 38 0 times, leaving a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 38, we get 38.
Grab the next digit (3) from the dividend, add it to 38, then carry on: 383 / 91

Let's proceed to step 3:
When dividing 383 by 91, we get 4 with a remainder of 19.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 364 away from 383, we end up with 19.
Take the next digit (3) from the dividend and append it to 19, then repeat: 193 / 91

Let's proceed to step 4:
193 divided by 91 is 2 with a remainder of 11.
The next digit of our result is 2. 
Result so far: 42.0
Deduct 182 from 193 and we're left with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 91

Let's proceed to step 5:
118 divided by 91 is 1 with a remainder of 27.
The next digit of our result is 1. 
Result so far: 421.0
If we subtract 91 from 118, we get 27.
Append the next digit (5) from the dividend to 27 and continue with: 275 / 91

Going ahead to step 6:
91 can be fit into 275 3 times, resulting in a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 4213.0
Deduct 273 from 275 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
If we divide 20 by 91, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 4213.0
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
91 can be fit into 200 2 times, resulting in a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 4213.02
If we subtract 182 from 200, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
91 goes into 180 1 times with a remainder of 89.
Write down 1 as next digit of the result. 
Result so far: 4213.021
If we take 91 away from 180, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Moving on to step 10:
When dividing 890 by 91, we get 9 with a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 4213.0219
If we take 819 away from 890, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 11:
710 divided by 91 is 7 with a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 4213.02197
The remainder is 73 after subtracting 637 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 12:
When dividing 730 by 91, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 4213.021978
If we subtract 728 from 730, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 13:
If we divide 20 by 91, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 4213.021978
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 14:
If we divide 200 by 91, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 4213.02197802
Deduct 182 from 200 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 4213.02197802 and a remainder of 1.8e-08.