Let's divide 572888 by 81
The aim is to understand the frequency of 81 in 572888.

Step 1:
When dividing 5 by 81, we get 0 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.
Bring next digit (7) of the dividend behind the 5 and repeat the process: 57 / 81

Moving on to step 2:
57 divided by 81 is 0 with a remainder of 57.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 57 leaves us with 57.
Fetch the next digit (2) from the dividend, attach it to 57 and continue: 572 / 81

Advancing to step 3:
The number 81 fits into 572 7 times, leaving a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 5 after subtracting 567 from 572.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 81

Advancing to step 4:
The number 81 fits into 58 0 times, leaving a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
If we take 0 away from 58, we end up with 58.
Grab the next digit (8) from the dividend, add it to 58, then carry on: 588 / 81

Moving on to step 5:
588 divided by 81 is 7 with a remainder of 21.
The next digit of our result is 7. 
Result so far: 707.0
The remainder is 21 after subtracting 567 from 588.
Bring next digit (8) of the dividend behind the 21 and repeat the process: 218 / 81

Let's proceed to step 6:
81 goes into 218 2 times with a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 7072.0
The remainder is 56 after subtracting 162 from 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 7:
The number 81 fits into 560 6 times, leaving a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 7072.6
Subtracting 486 from 560 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 8:
81 goes into 740 9 times with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 7072.69
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.

Let's proceed to step 9:
110 divided by 81 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 7072.691
Subtracting 81 from 110 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 10:
When dividing 290 by 81, we get 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 7072.6913
Deduct 243 from 290 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 11:
81 can be fit into 470 5 times, resulting in a remainder of 65.
The next digit of our result is 5. 
Result so far: 7072.69135
Deduct 405 from 470 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 12:
If we divide 650 by 81, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 7072.691358
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.

Going ahead to step 13:
81 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 7072.691358
Subtracting 0 from 20 leaves us 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.

Step 14:
81 goes into 200 2 times with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 7072.69135802
If we subtract 162 from 200, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 7072.69135802, with a leftover of 3.8e-08.