957981 divided by 81 
The aim is to understand the frequency of 81 in 957981.

On to step 1:
81 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 81

Moving on to step 2:
81 goes into 95 1 times with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 81 from 95 leaves us with 14.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 81

Going ahead to step 3:
147 divided by 81 is 1 with a remainder of 66.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 81 from 147 to get 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 81

On to step 4:
When dividing 669 by 81, we get 8 with a remainder of 21.
The next digit of our result is 8. 
Result so far: 118.0
If we take 648 away from 669, we end up with 21.
Fetch the next digit (8) from the dividend, attach it to 21 and continue: 218 / 81

Let's proceed to step 5:
When dividing 218 by 81, we get 2 with a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 1182.0
If we subtract 162 from 218, we get 56.
Grab the next digit (1) from the dividend, add it to 56, then carry on: 561 / 81

On to step 6:
81 goes into 561 6 times with a remainder of 75.
The next digit of our result is 6. 
Result so far: 11826.0
If we take 486 away from 561, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 7:
81 goes into 750 9 times with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 11826.9
If we subtract 729 from 750, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 8:
81 goes into 210 2 times with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 11826.92
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 9:
81 can be fit into 480 5 times, resulting in a remainder of 75.
The next digit of our result is 5. 
Result so far: 11826.925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 10:
When dividing 750 by 81, we get 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 11826.9259
If we take 729 away from 750, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 11:
210 divided by 81 is 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 11826.92592
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 12:
81 can be fit into 480 5 times, resulting in a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 11826.925925
Deduct 405 from 480 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 13:
750 divided by 81 is 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 11826.9259259
The remainder is 21 after subtracting 729 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 14:
If we divide 210 by 81, we get 2 and a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 11826.92592592
Deduct 162 from 210 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 11826.92592592 with a balance of 4.8e-08.