We divide 817292 by 91
The aim is to understand the frequency of 91 in 817292.

Moving on to step 1:
8 divided by 91 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 91

Step 2:
When dividing 81 by 91, we get 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Include the next digit (7) from the dividend after 81, then repeat: 817 / 91

On to step 3:
If we divide 817 by 91, we get 8 and a remainder of 89.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 728 from 817 leaves us with 89.
Append the next digit (2) from the dividend to 89 and continue with: 892 / 91

Going ahead to step 4:
If we divide 892 by 91, we get 9 and a remainder of 73.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
Deduct 819 from 892 and we're left with 73.
Grab the next digit (9) from the dividend, add it to 73, then carry on: 739 / 91

Advancing to step 5:
If we divide 739 by 91, we get 8 and a remainder of 11.
The next digit of our result is 8. 
Result so far: 898.0
If we subtract 728 from 739, we get 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 91

On to step 6:
When dividing 112 by 91, we get 1 with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 8981.0
Subtract 91 from 112 to 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 7:
If we divide 210 by 91, we get 2 and a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 8981.2
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.

Going ahead to step 8:
When dividing 280 by 91, we get 3 with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 8981.23
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.

Step 9:
91 goes into 70 0 times with a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 8981.23
Subtract 0 from 70 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
The number 91 fits into 700 7 times, leaving a remainder of 63.
Put 7 as the next digit of the answer. 
Result so far: 8981.2307
If we subtract 637 from 700, we 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.

Step 11:
91 can be fit into 630 6 times, resulting in a remainder of 84.
The next digit of our result is 6. 
Result so far: 8981.23076
Subtracting 546 from 630 leaves us 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.

Let's proceed to step 12:
840 divided by 91 is 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 8981.230769
If we take 819 away from 840, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 13:
When dividing 210 by 91, we get 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 8981.2307692
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.

Moving on to step 14:
91 goes into 280 3 times with a remainder of 7.
The next digit of our result is 3. 
Result so far: 8981.23076923
Deduct 273 from 280 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final result is 8981.23076923 with a remainder of 7e-09.