We look at the division of 195662 by 81 
The aim is to understand the frequency of 81 in 195662.

Step 1:
1 divided by 81 is 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 81

Step 2:
When dividing 19 by 81, we get 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 19 and we're left with 19.
Fetch the next digit (5) from the dividend, attach it to 19 and continue: 195 / 81

Let's proceed to step 3:
81 can be fit into 195 2 times, resulting in a remainder of 33.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 162 from 195, we get 33.
Append the next digit (6) from the dividend to 33 and continue with: 336 / 81

Going ahead to step 4:
If we divide 336 by 81, we get 4 and a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 24.0
Deduct 324 from 336 and we're left with 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 81

Let's proceed to step 5:
81 can be fit into 126 1 times, resulting in a remainder of 45.
Record the quotient 1 as the next digit in the result. 
Result so far: 241.0
The remainder is 45 after subtracting 81 from 126.
Grab the next digit (2) from the dividend, add it to 45, then carry on: 452 / 81

Step 6:
If we divide 452 by 81, we get 5 and a remainder of 47.
The next digit of our result is 5. 
Result so far: 2415.0
Subtract 405 from 452 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Let's proceed to step 7:
The number 81 fits into 470 5 times, leaving a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 2415.5
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.

On to step 8:
650 divided by 81 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 2415.58
Subtracting 648 from 650 leaves us with 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 9:
20 divided by 81 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 2415.58
Deduct 0 from 20 and we're left 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 10:
200 divided by 81 is 2 with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 2415.5802
Subtract 162 from 200 to 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.

Step 11:
81 can be fit into 380 4 times, resulting in a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 2415.58024
Deduct 324 from 380 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 12:
81 goes into 560 6 times with a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 2415.580246
If we subtract 486 from 560, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 13:
When dividing 740 by 81, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 2415.5802469
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.

On to step 14:
If we divide 110 by 81, we get 1 and a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 2415.58024691
Deduct 81 from 110 and we're left 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.

The final outcome is 2415.58024691, with a leftover of 2.9e-08.