We look at the division of 29748 by 81 
The aim is to understand the frequency of 81 in 29748.

Step 1:
If we divide 2 by 81, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 81

Let's proceed to step 2:
When dividing 29 by 81, we get 0 with a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 29, we get 29.
Append the next digit (7) from the dividend to 29 and continue with: 297 / 81

Step 3:
81 goes into 297 3 times with a remainder of 54.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 243 away from 297, we end up with 54.
Take the next digit (4) from the dividend and append it to 54, then repeat: 544 / 81

Step 4:
544 divided by 81 is 6 with a remainder of 58.
Put 6 as the next digit of the answer. 
Result so far: 36.0
Deduct 486 from 544 and we're left with 58.
Bring next digit (8) of the dividend behind the 58 and repeat the process: 588 / 81

On to step 5:
81 goes into 588 7 times with a remainder of 21.
Put 7 as the next digit of the answer. 
Result so far: 367.0
Subtract 567 from 588 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 6:
The number 81 fits into 210 2 times, leaving a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 367.2
If we subtract 162 from 210, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
If we divide 480 by 81, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 367.25
If we subtract 405 from 480, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 8:
750 divided by 81 is 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 367.259
Subtracting 729 from 750 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 9:
The number 81 fits into 210 2 times, leaving a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 367.2592
Subtracting 162 from 210 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
The number 81 fits into 480 5 times, leaving a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 367.25925
Deduct 405 from 480 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 11:
If we divide 750 by 81, we get 9 and a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 367.259259
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 12:
The number 81 fits into 210 2 times, leaving a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 367.2592592
Subtracting 162 from 210 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 13:
When dividing 480 by 81, we get 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 367.25925925
Subtracting 405 from 480 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The final outcome is 367.25925925, with a leftover of 7.5e-08.