We look at the division of 976122 by 81 
The aim is to understand the frequency of 81 in 976122.

On to step 1:
The number 81 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 81

Advancing to step 2:
When dividing 97 by 81, we get 1 with a remainder of 16.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 81 from 97 and we're left with 16.
Fetch the next digit (6) from the dividend, attach it to 16 and continue: 166 / 81

On to step 3:
When dividing 166 by 81, we get 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 12.0
Subtracting 162 from 166 leaves us with 4.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 81

Advancing to step 4:
The number 81 fits into 41 0 times, leaving a remainder of 41.
Use 0 as the next digit of our solution. 
Result so far: 120.0
If we take 0 away from 41, we end up with 41.
Include the next digit (2) from the dividend after 41, then repeat: 412 / 81

Step 5:
The number 81 fits into 412 5 times, leaving a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 1205.0
If we subtract 405 from 412, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 81

Let's proceed to step 6:
When dividing 72 by 81, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 12050.0
Deduct 0 from 72 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 7:
The number 81 fits into 720 8 times, leaving a remainder of 72.
The next digit of our result is 8. 
Result so far: 12050.8
If we subtract 648 from 720, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 8:
81 goes into 720 8 times with a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 12050.88
Subtracting 648 from 720 leaves us with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 12050.88, with a leftover of 0.072.