We look at the division of 238753 by 81 
The aim is to understand the frequency of 81 in 238753.

Going ahead to step 1:
The number 81 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 81

Step 2:
81 goes into 23 0 times with a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 23 after subtracting 0 from 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 81

On to step 3:
81 can be fit into 238 2 times, resulting in a remainder of 76.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 162 from 238 and we're left with 76.
Append the next digit (7) from the dividend to 76 and continue with: 767 / 81

Going ahead to step 4:
If we divide 767 by 81, we get 9 and a remainder of 38.
Record the quotient 9 as the next digit in the result. 
Result so far: 29.0
If we take 729 away from 767, we end up with 38.
Append the next digit (5) from the dividend to 38 and continue with: 385 / 81

Step 5:
385 divided by 81 is 4 with a remainder of 61.
Use 4 as the next digit of our solution. 
Result so far: 294.0
Subtracting 324 from 385 leaves us with 61.
Append the next digit (3) from the dividend to 61 and continue with: 613 / 81

Let's proceed to step 6:
81 can be fit into 613 7 times, resulting in a remainder of 46.
Record the quotient 7 as the next digit in the result. 
Result so far: 2947.0
If we subtract 567 from 613, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 7:
460 divided by 81 is 5 with a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 2947.5
The remainder is 55 after subtracting 405 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 8:
The number 81 fits into 550 6 times, leaving a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 2947.56
If we take 486 away from 550, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 9:
When dividing 640 by 81, we get 7 with a remainder of 73.
Use 7 as the next digit of our solution. 
Result so far: 2947.567
If we take 567 away from 640, we end up with 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 10:
The number 81 fits into 730 9 times, leaving a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 2947.5679
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.

Moving on to step 11:
10 divided by 81 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 2947.5679
Deduct 0 from 10 and we're left 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.

Let's proceed to step 12:
The number 81 fits into 100 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 2947.567901
The remainder is 19 after subtracting 81 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
190 divided by 81 is 2 with a remainder of 28.
The next digit of our result is 2. 
Result so far: 2947.5679012
Subtracting 162 from 190 leaves us 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.

Advancing to step 14:
81 goes into 280 3 times with a remainder of 37.
The next digit of our result is 3. 
Result so far: 2947.56790123
Subtract 243 from 280 to 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 2947.56790123 with a remainder of 3.7e-08.