We look at the division of 57712699 by 81 
The aim is to understand the frequency of 81 in 57712699.

Moving on to step 1:
81 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 81

On to step 2:
81 goes into 57 0 times with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 57, we get 57.
Fetch the next digit (7) from the dividend, attach it to 57 and continue: 577 / 81

Let's proceed to step 3:
The number 81 fits into 577 7 times, leaving a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 567 from 577 leaves us with 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 81

Advancing to step 4:
When dividing 101 by 81, we get 1 with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 71.0
Subtract 81 from 101 to get 20.
Grab the next digit (2) from the dividend, add it to 20, then carry on: 202 / 81

Going ahead to step 5:
When dividing 202 by 81, we get 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 712.0
Subtract 162 from 202 to get 40.
Take the next digit (6) from the dividend and append it to 40, then repeat: 406 / 81

Advancing to step 6:
81 goes into 406 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 7125.0
Deduct 405 from 406 and we're left with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 81

Let's proceed to step 7:
19 divided by 81 is 0 with a remainder of 19.
The next digit of our result is 0. 
Result so far: 71250.0
If we take 0 away from 19, we end up with 19.
Append the next digit (9) from the dividend to 19 and continue with: 199 / 81

Step 8:
199 divided by 81 is 2 with a remainder of 37.
The number 2 becomes the next digit in our result. 
Result so far: 712502.0
If we take 162 away from 199, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 9:
81 goes into 370 4 times with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 712502.4
The remainder is 46 after subtracting 324 from 370.
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 10:
When dividing 460 by 81, we get 5 with a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 712502.45
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.

Moving on to step 11:
81 goes into 550 6 times with a remainder of 64.
The next digit of our result is 6. 
Result so far: 712502.456
The remainder is 64 after subtracting 486 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 12:
640 divided by 81 is 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 712502.4567
Deduct 567 from 640 and we're left 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.

On to step 13:
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: 712502.45679
If we take 729 away from 730, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 14:
If we divide 10 by 81, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 712502.45679
The remainder is 10 after subtracting 0 from 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 15:
If we divide 100 by 81, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 712502.4567901
Deduct 81 from 100 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 16:
81 can be fit into 190 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 712502.45679012
If we subtract 162 from 190, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

In conclusion, the division gives 712502.45679012 with a balance of 2.8e-08.