We look at the division of 30669 by 91 
The aim is to understand the frequency of 91 in 30669.

Going ahead to step 1:
3 divided by 91 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 91

Moving on to step 2:
91 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 91

Going ahead to step 3:
If we divide 306 by 91, we get 3 and a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 273 from 306 and we're left with 33.
Bring next digit (6) of the dividend behind the 33 and repeat the process: 336 / 91

Let's proceed to step 4:
If we divide 336 by 91, we get 3 and a remainder of 63.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
If we take 273 away from 336, we end up with 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 91

Step 5:
When dividing 639 by 91, we get 7 with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 337.0
Subtracting 637 from 639 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 6:
91 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 337.0
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
200 divided by 91 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 337.02
If we subtract 182 from 200, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 8:
180 divided by 91 is 1 with a remainder of 89.
Write down 1 as next digit of the result. 
Result so far: 337.021
The remainder is 89 after subtracting 91 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 9:
890 divided by 91 is 9 with a remainder of 71.
The next digit of our result is 9. 
Result so far: 337.0219
If we subtract 819 from 890, we get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 10:
710 divided by 91 is 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 337.02197
Subtracting 637 from 710 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 11:
91 can be fit into 730 8 times, resulting in a remainder of 2.
The next digit of our result is 8. 
Result so far: 337.021978
If we subtract 728 from 730, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 12:
91 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 337.021978
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
When dividing 200 by 91, we get 2 with a remainder of 18.
The next digit of our result is 2. 
Result so far: 337.02197802
The remainder is 18 after subtracting 182 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The quotient of the division is 337.02197802, and the remainder is 1.8e-08.