We're dividing 795813 by 81 
The aim is to understand the frequency of 81 in 795813.

Advancing to step 1:
If we divide 7 by 81, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 81

Let's proceed to step 2:
81 can be fit into 79 0 times, resulting in a remainder of 79.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Grab the next digit (5) from the dividend, add it to 79, then carry on: 795 / 81

Step 3:
When dividing 795 by 81, we get 9 with a remainder of 66.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 66 after subtracting 729 from 795.
Grab the next digit (8) from the dividend, add it to 66, then carry on: 668 / 81

Let's proceed to step 4:
When dividing 668 by 81, we get 8 with a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 98.0
The remainder is 20 after subtracting 648 from 668.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 81

Moving on to step 5:
When dividing 201 by 81, we get 2 with a remainder of 39.
Record the quotient 2 as the next digit in the result. 
Result so far: 982.0
If we take 162 away from 201, we end up with 39.
Bring next digit (3) of the dividend behind the 39 and repeat the process: 393 / 81

Step 6:
The number 81 fits into 393 4 times, leaving a remainder of 69.
The next digit of our result is 4. 
Result so far: 9824.0
The remainder is 69 after subtracting 324 from 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

On to step 7:
81 goes into 690 8 times with a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 9824.8
If we take 648 away from 690, we end up 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.

Let's proceed to step 8:
420 divided by 81 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 9824.85
Subtract 405 from 420 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 9:
When dividing 150 by 81, we get 1 with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 9824.851
Subtracting 81 from 150 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 10:
81 goes into 690 8 times with a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 9824.8518
If we subtract 648 from 690, we 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.

Going ahead to step 11:
420 divided by 81 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 9824.85185
Subtracting 405 from 420 leaves us 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 12:
If we divide 150 by 81, we get 1 and a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 9824.851851
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.

Let's proceed to step 13:
When dividing 690 by 81, we get 8 with a remainder of 42.
Write down 8 as next digit of the result. 
Result so far: 9824.8518518
If we take 648 away from 690, we end up 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 14:
420 divided by 81 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 9824.85185185
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.

After the division, we end up with 9824.85185185 and a remainder of 1.5e-08.