We're dividing 862287 by 81 
The aim is to understand the frequency of 81 in 862287.

Let's proceed to step 1:
8 divided by 81 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 81

Step 2:
81 goes into 86 1 times with a remainder of 5.
The next digit of our result is 1. 
Result so far: 1.0
If we take 81 away from 86, we end up with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 81

Advancing to step 3:
81 goes into 52 0 times with a remainder of 52.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 52, we get 52.
Take the next digit (2) from the dividend and append it to 52, then repeat: 522 / 81

Moving on to step 4:
81 goes into 522 6 times with a remainder of 36.
Write down 6 as next digit of the result. 
Result so far: 106.0
If we take 486 away from 522, we end up with 36.
Append the next digit (8) from the dividend to 36 and continue with: 368 / 81

Moving on to step 5:
368 divided by 81 is 4 with a remainder of 44.
The number 4 becomes the next digit in our result. 
Result so far: 1064.0
Subtract 324 from 368 to get 44.
Bring next digit (7) of the dividend behind the 44 and repeat the process: 447 / 81

Moving on to step 6:
81 can be fit into 447 5 times, resulting in a remainder of 42.
Record the quotient 5 as the next digit in the result. 
Result so far: 10645.0
Subtract 405 from 447 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
If we divide 420 by 81, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 10645.5
The remainder is 15 after subtracting 405 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
150 divided by 81 is 1 with a remainder of 69.
The next digit of our result is 1. 
Result so far: 10645.51
The remainder is 69 after subtracting 81 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 9:
If we divide 690 by 81, we get 8 and a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 10645.518
Subtracting 648 from 690 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 10:
If we divide 420 by 81, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 10645.5185
If we take 405 away from 420, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
The number 81 fits into 150 1 times, leaving a remainder of 69.
Use 1 as the next digit of our solution. 
Result so far: 10645.51851
Subtract 81 from 150 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 12:
690 divided by 81 is 8 with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 10645.518518
Deduct 648 from 690 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 13:
When dividing 420 by 81, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 10645.5185185
The remainder is 15 after subtracting 405 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 14:
The number 81 fits into 150 1 times, leaving a remainder of 69.
The next digit of our result is 1. 
Result so far: 10645.51851851
Subtract 81 from 150 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

The final result is 10645.51851851 with a remainder of 6.9e-08.