Let's divide 235333 by 81
The aim is to understand the frequency of 81 in 235333.

Advancing to step 1:
When dividing 2 by 81, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 81

Advancing to step 2:
The number 81 fits into 23 0 times, leaving a remainder of 23.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 23 after subtracting 0 from 23.
Include the next digit (5) from the dividend after 23, then repeat: 235 / 81

Going ahead to step 3:
235 divided by 81 is 2 with a remainder of 73.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 162 from 235, we get 73.
Grab the next digit (3) from the dividend, add it to 73, then carry on: 733 / 81

Let's proceed to step 4:
81 can be fit into 733 9 times, resulting in a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 29.0
Subtract 729 from 733 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 81

Moving on to step 5:
43 divided by 81 is 0 with a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 290.0
If we take 0 away from 43, we end up with 43.
Include the next digit (3) from the dividend after 43, then repeat: 433 / 81

Advancing to step 6:
When dividing 433 by 81, we get 5 with a remainder of 28.
The number 5 becomes the next digit in our result. 
Result so far: 2905.0
Deduct 405 from 433 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 7:
If we divide 280 by 81, we get 3 and a remainder of 37.
The next digit of our result is 3. 
Result so far: 2905.3
The remainder is 37 after subtracting 243 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 8:
When dividing 370 by 81, we get 4 with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 2905.34
Subtracting 324 from 370 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 9:
81 can be fit into 460 5 times, resulting in a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 2905.345
If we subtract 405 from 460, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 10:
550 divided by 81 is 6 with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 2905.3456
Subtract 486 from 550 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 11:
81 goes into 640 7 times with a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 2905.34567
If we subtract 567 from 640, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 12:
When dividing 730 by 81, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 2905.345679
If we subtract 729 from 730, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 13:
When dividing 10 by 81, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 2905.345679
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 14:
81 goes into 100 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 2905.34567901
If we subtract 81 from 100, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final result is 2905.34567901 with a remainder of 1.9e-08.