Let's divide 205115 by 91
The aim is to understand the frequency of 91 in 205115.

On to step 1:
2 divided by 91 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 91

Step 2:
The number 91 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 91

Advancing to step 3:
If we divide 205 by 91, we get 2 and a remainder of 23.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 182 away from 205, we end up with 23.
Take the next digit (1) from the dividend and append it to 23, then repeat: 231 / 91

Step 4:
231 divided by 91 is 2 with a remainder of 49.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtracting 182 from 231 leaves us with 49.
Take the next digit (1) from the dividend and append it to 49, then repeat: 491 / 91

Step 5:
91 can be fit into 491 5 times, resulting in a remainder of 36.
Write down 5 as next digit of the result. 
Result so far: 225.0
The remainder is 36 after subtracting 455 from 491.
Bring next digit (5) of the dividend behind the 36 and repeat the process: 365 / 91

Step 6:
When dividing 365 by 91, we get 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 2254.0
If we take 364 away from 365, we end up 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 7:
91 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2254.0
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.

On to step 8:
91 goes into 100 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 2254.01
Subtracting 91 from 100 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
90 divided by 91 is 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 2254.01
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 10:
900 divided by 91 is 9 with a remainder of 81.
The next digit of our result is 9. 
Result so far: 2254.0109
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.

Going ahead to step 11:
91 goes into 810 8 times with a remainder of 82.
Use 8 as the next digit of our solution. 
Result so far: 2254.01098
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.

Moving on to step 12:
91 goes into 820 9 times with a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 2254.010989
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.

Moving on to step 13:
If we divide 10 by 91, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2254.010989
Subtracting 0 from 10 leaves us 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.

Step 14:
The number 91 fits into 100 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 2254.01098901
The remainder is 9 after subtracting 91 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

After the division, we end up with 2254.01098901 and a remainder of 9e-09.