We look at the division of 91534790 by 11 
The aim is to understand the frequency of 11 in 91534790.

Step 1:
11 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 11

Moving on to step 2:
The number 11 fits into 91 8 times, leaving a remainder of 3.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 88 from 91, we get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 11

Let's proceed to step 3:
11 can be fit into 35 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 83.0
Subtract 33 from 35 to get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 11

Step 4:
11 goes into 23 2 times with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 832.0
The remainder is 1 after subtracting 22 from 23.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 11

Moving on to step 5:
If we divide 14 by 11, we get 1 and a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 8321.0
If we subtract 11 from 14, we get 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 11

Step 6:
37 divided by 11 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 83213.0
Subtract 33 from 37 to get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 11

Advancing to step 7:
The number 11 fits into 49 4 times, leaving a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 832134.0
The remainder is 5 after subtracting 44 from 49.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 11

Going ahead to step 8:
The number 11 fits into 50 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 8321344.0
Subtract 44 from 50 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 9:
When dividing 60 by 11, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 8321344.5
If we take 55 away from 60, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 10:
11 can be fit into 50 4 times, resulting in a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 8321344.54
If we subtract 44 from 50, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
When dividing 60 by 11, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 8321344.545
Subtracting 55 from 60 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 12:
11 goes into 50 4 times with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 8321344.5454
Subtracting 44 from 50 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
11 can be fit into 60 5 times, resulting in a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 8321344.54545
Deduct 55 from 60 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 14:
11 can be fit into 50 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 8321344.545454
If we take 44 away from 50, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 15:
11 goes into 60 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 8321344.5454545
The remainder is 5 after subtracting 55 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 16:
11 can be fit into 50 4 times, resulting in a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 8321344.54545454
If we take 44 away from 50, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 8321344.54545454 with a remainder of 6e-09.