We're dividing 81030354 by 811 
The aim is to understand the frequency of 811 in 81030354.

Moving on to step 1:
8 divided by 811 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 811

Advancing to step 2:
If we divide 81 by 811, we get 0 and a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Append the next digit (0) from the dividend to 81 and continue with: 810 / 811

Advancing to step 3:
811 can be fit into 810 0 times, resulting in a remainder of 810.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 810, we get 810.
Append the next digit (3) from the dividend to 810 and continue with: 8103 / 811

Moving on to step 4:
When dividing 8103 by 811, we get 9 with a remainder of 804.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 7299 away from 8103, we end up with 804.
Take the next digit (0) from the dividend and append it to 804, then repeat: 8040 / 811

Let's proceed to step 5:
811 can be fit into 8040 9 times, resulting in a remainder of 741.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
The remainder is 741 after subtracting 7299 from 8040.
Grab the next digit (3) from the dividend, add it to 741, then carry on: 7413 / 811

On to step 6:
If we divide 7413 by 811, we get 9 and a remainder of 114.
Write down 9 as next digit of the result. 
Result so far: 999.0
Deduct 7299 from 7413 and we're left with 114.
Bring next digit (5) of the dividend behind the 114 and repeat the process: 1145 / 811

Going ahead to step 7:
If we divide 1145 by 811, we get 1 and a remainder of 334.
Record the quotient 1 as the next digit in the result. 
Result so far: 9991.0
Deduct 811 from 1145 and we're left with 334.
Include the next digit (4) from the dividend after 334, then repeat: 3344 / 811

Let's proceed to step 8:
The number 811 fits into 3344 4 times, leaving a remainder of 100.
Record the quotient 4 as the next digit in the result. 
Result so far: 99914.0
Subtracting 3244 from 3344 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 9:
When dividing 1000 by 811, we get 1 with a remainder of 189.
Record the quotient 1 as the next digit in the result. 
Result so far: 99914.1
If we take 811 away from 1000, we end up with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Moving on to step 10:
811 can be fit into 1890 2 times, resulting in a remainder of 268.
The next digit of our result is 2. 
Result so far: 99914.12
Subtracting 1622 from 1890 leaves us with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Moving on to step 11:
The number 811 fits into 2680 3 times, leaving a remainder of 247.
Put 3 as the next digit of the answer. 
Result so far: 99914.123
If we take 2433 away from 2680, we end up with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Moving on to step 12:
If we divide 2470 by 811, we get 3 and a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 99914.1233
If we subtract 2433 from 2470, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

The final result is 99914.1233 with a remainder of 0.00037.