13358819 divided by 811 
The aim is to understand the frequency of 811 in 13358819.

Step 1:
811 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 811

Advancing to step 2:
The number 811 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 811

On to step 3:
811 goes into 133 0 times with a remainder of 133.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 133 after subtracting 0 from 133.
Grab the next digit (5) from the dividend, add it to 133, then carry on: 1335 / 811

Moving on to step 4:
811 goes into 1335 1 times with a remainder of 524.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 811 from 1335, we get 524.
Grab the next digit (8) from the dividend, add it to 524, then carry on: 5248 / 811

Going ahead to step 5:
The number 811 fits into 5248 6 times, leaving a remainder of 382.
The next digit of our result is 6. 
Result so far: 16.0
Deduct 4866 from 5248 and we're left with 382.
Grab the next digit (8) from the dividend, add it to 382, then carry on: 3828 / 811

On to step 6:
811 goes into 3828 4 times with a remainder of 584.
Use 4 as the next digit of our solution. 
Result so far: 164.0
If we subtract 3244 from 3828, we get 584.
Include the next digit (1) from the dividend after 584, then repeat: 5841 / 811

Moving on to step 7:
5841 divided by 811 is 7 with a remainder of 164.
Use 7 as the next digit of our solution. 
Result so far: 1647.0
If we subtract 5677 from 5841, we get 164.
Append the next digit (9) from the dividend to 164 and continue with: 1649 / 811

Let's proceed to step 8:
1649 divided by 811 is 2 with a remainder of 27.
The next digit of our result is 2. 
Result so far: 16472.0
The remainder is 27 after subtracting 1622 from 1649.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 9:
When dividing 270 by 811, we get 0 with a remainder of 270.
Record the quotient 0 as the next digit in the result. 
Result so far: 16472.0
If we take 0 away from 270, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 10:
The number 811 fits into 2700 3 times, leaving a remainder of 267.
Write down 3 as next digit of the result. 
Result so far: 16472.03
If we subtract 2433 from 2700, we get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

On to step 11:
2670 divided by 811 is 3 with a remainder of 237.
Put 3 as the next digit of the answer. 
Result so far: 16472.033
If we subtract 2433 from 2670, we get 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

The final outcome is 16472.033, with a leftover of 0.0237.