992198 ÷ 91 
The aim is to understand the frequency of 91 in 992198.

Let's proceed to step 1:
91 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 91

Step 2:
When dividing 99 by 91, we get 1 with a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 8 after subtracting 91 from 99.
Include the next digit (2) from the dividend after 8, then repeat: 82 / 91

Moving on to step 3:
91 goes into 82 0 times with a remainder of 82.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Deduct 0 from 82 and we're left with 82.
Grab the next digit (1) from the dividend, add it to 82, then carry on: 821 / 91

Going ahead to step 4:
91 goes into 821 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
If we take 819 away from 821, we end up with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 91

On to step 5:
91 can be fit into 29 0 times, resulting in a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 1090.0
If we subtract 0 from 29, we get 29.
Fetch the next digit (8) from the dividend, attach it to 29 and continue: 298 / 91

Moving on to step 6:
When dividing 298 by 91, we get 3 with a remainder of 25.
Put 3 as the next digit of the answer. 
Result so far: 10903.0
If we take 273 away from 298, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 7:
91 can be fit into 250 2 times, resulting in a remainder of 68.
Record the quotient 2 as the next digit in the result. 
Result so far: 10903.2
The remainder is 68 after subtracting 182 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 8:
91 goes into 680 7 times with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 10903.27
Deduct 637 from 680 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 9:
When dividing 430 by 91, we get 4 with a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 10903.274
If we take 364 away from 430, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 10:
91 can be fit into 660 7 times, resulting in a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 10903.2747
Subtracting 637 from 660 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 11:
230 divided by 91 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 10903.27472
Deduct 182 from 230 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 12:
The number 91 fits into 480 5 times, leaving a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 10903.274725
If we take 455 away from 480, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
91 can be fit into 250 2 times, resulting in a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 10903.2747252
Deduct 182 from 250 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 14:
680 divided by 91 is 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 10903.27472527
If we take 637 away from 680, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Our division results in 10903.27472527 with a remaining 4.3e-08.