We're dividing 308926 by 81 
The aim is to understand the frequency of 81 in 308926.

Moving on to step 1:
When dividing 3 by 81, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 81

Let's proceed to step 2:
The number 81 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Append the next digit (8) from the dividend to 30 and continue with: 308 / 81

Advancing to step 3:
308 divided by 81 is 3 with a remainder of 65.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 243 from 308 leaves us with 65.
Include the next digit (9) from the dividend after 65, then repeat: 659 / 81

Let's proceed to step 4:
When dividing 659 by 81, we get 8 with a remainder of 11.
Write down 8 as next digit of the result. 
Result so far: 38.0
The remainder is 11 after subtracting 648 from 659.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 81

Going ahead to step 5:
81 can be fit into 112 1 times, resulting in a remainder of 31.
Write down 1 as next digit of the result. 
Result so far: 381.0
Deduct 81 from 112 and we're left with 31.
Bring next digit (6) of the dividend behind the 31 and repeat the process: 316 / 81

Advancing to step 6:
If we divide 316 by 81, we get 3 and a remainder of 73.
Write down 3 as next digit of the result. 
Result so far: 3813.0
If we subtract 243 from 316, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 7:
81 can be fit into 730 9 times, resulting in a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 3813.9
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 8:
81 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 3813.9
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
81 goes into 100 1 times with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 3813.901
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 10:
When dividing 190 by 81, we get 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 3813.9012
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 11:
When dividing 280 by 81, we get 3 with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 3813.90123
Deduct 243 from 280 and we're left 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.

Let's proceed to step 12:
81 goes into 370 4 times with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 3813.901234
If we subtract 324 from 370, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 13:
460 divided by 81 is 5 with a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 3813.9012345
If we take 405 away from 460, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 14:
81 goes into 550 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 3813.90123456
Subtracting 486 from 550 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

In conclusion, the division gives 3813.90123456 with a balance of 6.4e-08.