799554 ÷ 91 
The aim is to understand the frequency of 91 in 799554.

On to step 1:
When dividing 7 by 91, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (9) from the dividend and append it to 7, then repeat: 79 / 91

On to step 2:
The number 91 fits into 79 0 times, leaving a remainder of 79.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Take the next digit (9) from the dividend and append it to 79, then repeat: 799 / 91

Going ahead to step 3:
If we divide 799 by 91, we get 8 and a remainder of 71.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 728 from 799 leaves us with 71.
Fetch the next digit (5) from the dividend, attach it to 71 and continue: 715 / 91

Advancing to step 4:
91 can be fit into 715 7 times, resulting in a remainder of 78.
The number 7 becomes the next digit in our result. 
Result so far: 87.0
If we subtract 637 from 715, we get 78.
Append the next digit (5) from the dividend to 78 and continue with: 785 / 91

Moving on to step 5:
If we divide 785 by 91, we get 8 and a remainder of 57.
Write down 8 as next digit of the result. 
Result so far: 878.0
If we take 728 away from 785, we end up with 57.
Include the next digit (4) from the dividend after 57, then repeat: 574 / 91

Advancing to step 6:
When dividing 574 by 91, we get 6 with a remainder of 28.
Record the quotient 6 as the next digit in the result. 
Result so far: 8786.0
If we subtract 546 from 574, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
91 can be fit into 280 3 times, resulting in a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 8786.3
If we take 273 away from 280, we end up 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.

On to step 8:
When dividing 70 by 91, we get 0 with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 8786.3
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.

Let's proceed to step 9:
If we divide 700 by 91, we get 7 and a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 8786.307
Deduct 637 from 700 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Moving on to step 10:
When dividing 630 by 91, we get 6 with a remainder of 84.
Put 6 as the next digit of the answer. 
Result so far: 8786.3076
Deduct 546 from 630 and we're left 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.

Going ahead to step 11:
840 divided by 91 is 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 8786.30769
Subtract 819 from 840 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.

Let's proceed to step 12:
210 divided by 91 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 8786.307692
Subtracting 182 from 210 leaves us 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 13:
280 divided by 91 is 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 8786.3076923
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 14:
91 goes into 70 0 times with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 8786.3076923
If we take 0 away from 70, we end up 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.

The final result is 8786.3076923 with a remainder of 7e-08.