We divide 13852 by 91
The aim is to understand the frequency of 91 in 13852.

Advancing to step 1:
The number 91 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 91

On to step 2:
The number 91 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Fetch the next digit (8) from the dividend, attach it to 13 and continue: 138 / 91

Going ahead to step 3:
138 divided by 91 is 1 with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 91 away from 138, we end up with 47.
Bring next digit (5) of the dividend behind the 47 and repeat the process: 475 / 91

Step 4:
475 divided by 91 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 15.0
If we subtract 455 from 475, we get 20.
Append the next digit (2) from the dividend to 20 and continue with: 202 / 91

Going ahead to step 5:
If we divide 202 by 91, we get 2 and a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 152.0
Subtracting 182 from 202 leaves us 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.

Step 6:
200 divided by 91 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 152.2
The remainder is 18 after subtracting 182 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
91 goes into 180 1 times with a remainder of 89.
The next digit of our result is 1. 
Result so far: 152.21
If we subtract 91 from 180, we get 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 8:
When dividing 890 by 91, we get 9 with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 152.219
Subtract 819 from 890 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 9:
91 can be fit into 710 7 times, resulting in a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 152.2197
Subtract 637 from 710 to get 73.
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 10:
91 goes into 730 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 152.21978
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.

Step 11:
The number 91 fits into 20 0 times, leaving a remainder of 20.
The next digit of our result is 0. 
Result so far: 152.21978
Deduct 0 from 20 and we're left 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.

Going ahead to step 12:
If we divide 200 by 91, we get 2 and a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 152.2197802
The remainder is 18 after subtracting 182 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 13:
91 goes into 180 1 times with a remainder of 89.
Record the quotient 1 as the next digit in the result. 
Result so far: 152.21978021
Subtracting 91 from 180 leaves us 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.

Our division results in 152.21978021 with a remaining 8.9e-08.