We're dividing 353027 by 81 
The aim is to understand the frequency of 81 in 353027.

Going ahead to step 1:
81 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 81

Advancing to step 2:
The number 81 fits into 35 0 times, leaving a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 81

Going ahead to step 3:
When dividing 353 by 81, we get 4 with a remainder of 29.
The next digit of our result is 4. 
Result so far: 4.0
If we subtract 324 from 353, we get 29.
Take the next digit (0) from the dividend and append it to 29, then repeat: 290 / 81

Moving on to step 4:
If we divide 290 by 81, we get 3 and a remainder of 47.
The next digit of our result is 3. 
Result so far: 43.0
Subtracting 243 from 290 leaves us with 47.
Take the next digit (2) from the dividend and append it to 47, then repeat: 472 / 81

Advancing to step 5:
81 can be fit into 472 5 times, resulting in a remainder of 67.
Use 5 as the next digit of our solution. 
Result so far: 435.0
Subtract 405 from 472 to get 67.
Include the next digit (7) from the dividend after 67, then repeat: 677 / 81

Going ahead to step 6:
The number 81 fits into 677 8 times, leaving a remainder of 29.
Write down 8 as next digit of the result. 
Result so far: 4358.0
Subtracting 648 from 677 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 7:
If we divide 290 by 81, we get 3 and a remainder of 47.
The number 3 becomes the next digit in our result. 
Result so far: 4358.3
The remainder is 47 after subtracting 243 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 8:
When dividing 470 by 81, we get 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 4358.35
Subtract 405 from 470 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 9:
If we divide 650 by 81, we get 8 and a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 4358.358
If we subtract 648 from 650, 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.

Moving on to step 10:
When dividing 20 by 81, we get 0 with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 4358.358
Deduct 0 from 20 and we're left with 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 11:
If we divide 200 by 81, we get 2 and a remainder of 38.
The next digit of our result is 2. 
Result so far: 4358.35802
If we take 162 away from 200, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 12:
81 goes into 380 4 times with a remainder of 56.
The number 4 becomes the next digit in our result. 
Result so far: 4358.358024
Subtracting 324 from 380 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 13:
81 goes into 560 6 times with a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 4358.3580246
If we subtract 486 from 560, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 14:
When dividing 740 by 81, we get 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 4358.35802469
If we subtract 729 from 740, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final outcome is 4358.35802469, with a leftover of 1.1e-08.