We look at the division of 368452 by 91 
The aim is to understand the frequency of 91 in 368452.

Going ahead to step 1:
3 divided by 91 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 91

Going ahead to step 2:
If we divide 36 by 91, we get 0 and a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 36, we end up with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 91

Step 3:
91 can be fit into 368 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 364 from 368 to get 4.
Grab the next digit (4) from the dividend, add it to 4, then carry on: 44 / 91

Advancing to step 4:
91 can be fit into 44 0 times, resulting in a remainder of 44.
The number 0 becomes the next digit in our result. 
Result so far: 40.0
If we subtract 0 from 44, we get 44.
Append the next digit (5) from the dividend to 44 and continue with: 445 / 91

Let's proceed to step 5:
When dividing 445 by 91, we get 4 with a remainder of 81.
Write down 4 as next digit of the result. 
Result so far: 404.0
Subtract 364 from 445 to get 81.
Fetch the next digit (2) from the dividend, attach it to 81 and continue: 812 / 91

Step 6:
91 goes into 812 8 times with a remainder of 84.
Record the quotient 8 as the next digit in the result. 
Result so far: 4048.0
If we take 728 away from 812, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 7:
The number 91 fits into 840 9 times, leaving a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 4048.9
If we subtract 819 from 840, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 8:
91 can be fit into 210 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 4048.92
If we take 182 away from 210, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
280 divided by 91 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 4048.923
The remainder is 7 after subtracting 273 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 10:
91 goes into 70 0 times with a remainder of 70.
The next digit of our result is 0. 
Result so far: 4048.923
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 11:
The number 91 fits into 700 7 times, leaving a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 4048.92307
Subtract 637 from 700 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 12:
The number 91 fits into 630 6 times, leaving a remainder of 84.
The next digit of our result is 6. 
Result so far: 4048.923076
The remainder is 84 after subtracting 546 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 13:
840 divided by 91 is 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 4048.9230769
The remainder is 21 after subtracting 819 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 14:
91 can be fit into 210 2 times, resulting in a remainder of 28.
The next digit of our result is 2. 
Result so far: 4048.92307692
The remainder is 28 after subtracting 182 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final result is 4048.92307692 with a remainder of 2.8e-08.