676804 ÷ 81 
The aim is to understand the frequency of 81 in 676804.

Advancing to step 1:
If we divide 6 by 81, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 81

Step 2:
81 goes into 67 0 times with a remainder of 67.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Bring next digit (6) of the dividend behind the 67 and repeat the process: 676 / 81

On to step 3:
81 can be fit into 676 8 times, resulting in a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 28 after subtracting 648 from 676.
Grab the next digit (8) from the dividend, add it to 28, then carry on: 288 / 81

Let's proceed to step 4:
288 divided by 81 is 3 with a remainder of 45.
Write down 3 as next digit of the result. 
Result so far: 83.0
If we take 243 away from 288, we end up with 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 81

Moving on to step 5:
81 goes into 450 5 times with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 835.0
If we take 405 away from 450, we end up with 45.
Grab the next digit (4) from the dividend, add it to 45, then carry on: 454 / 81

Let's proceed to step 6:
81 goes into 454 5 times with a remainder of 49.
The number 5 becomes the next digit in our result. 
Result so far: 8355.0
Subtract 405 from 454 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
When dividing 490 by 81, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 8355.6
Deduct 486 from 490 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
81 goes into 40 0 times with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 8355.6
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
81 goes into 400 4 times with a remainder of 76.
The next digit of our result is 4. 
Result so far: 8355.604
Subtracting 324 from 400 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 10:
The number 81 fits into 760 9 times, leaving a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 8355.6049
The remainder is 31 after subtracting 729 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 11:
81 goes into 310 3 times with a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 8355.60493
Subtracting 243 from 310 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 12:
The number 81 fits into 670 8 times, leaving a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 8355.604938
Deduct 648 from 670 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 13:
If we divide 220 by 81, we get 2 and a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 8355.6049382
Subtract 162 from 220 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 14:
81 can be fit into 580 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 8355.60493827
If we subtract 567 from 580, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 8355.60493827 with a balance of 1.3e-08.