We look at the division of 966932 by 81 
The aim is to understand the frequency of 81 in 966932.

Let's proceed to step 1:
9 divided by 81 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 81

On to step 2:
96 divided by 81 is 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 81 from 96 and we're left with 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 81

Let's proceed to step 3:
81 goes into 156 1 times with a remainder of 75.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
The remainder is 75 after subtracting 81 from 156.
Fetch the next digit (9) from the dividend, attach it to 75 and continue: 759 / 81

Advancing to step 4:
The number 81 fits into 759 9 times, leaving a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
Subtracting 729 from 759 leaves us with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 81

On to step 5:
81 goes into 303 3 times with a remainder of 60.
The next digit of our result is 3. 
Result so far: 1193.0
Deduct 243 from 303 and we're left with 60.
Bring next digit (2) of the dividend behind the 60 and repeat the process: 602 / 81

On to step 6:
81 goes into 602 7 times with a remainder of 35.
Put 7 as the next digit of the answer. 
Result so far: 11937.0
Deduct 567 from 602 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 7:
When dividing 350 by 81, we get 4 with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 11937.4
Deduct 324 from 350 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
260 divided by 81 is 3 with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 11937.43
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 9:
81 goes into 170 2 times with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 11937.432
Deduct 162 from 170 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
81 can be fit into 80 0 times, resulting in a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 11937.432
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 11:
81 can be fit into 800 9 times, resulting in a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 11937.43209
Subtract 729 from 800 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

On to step 12:
81 can be fit into 710 8 times, resulting in a remainder of 62.
The next digit of our result is 8. 
Result so far: 11937.432098
Subtracting 648 from 710 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 13:
When dividing 620 by 81, we get 7 with a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 11937.4320987
If we take 567 away from 620, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 14:
530 divided by 81 is 6 with a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 11937.43209876
Subtract 486 from 530 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

After the division, we end up with 11937.43209876 and a remainder of 4.4e-08.