Let's divide 940972 by 81
The aim is to understand the frequency of 81 in 940972.

Step 1:
9 divided by 81 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 81

On to step 2:
If we divide 94 by 81, we get 1 and a remainder of 13.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 81 from 94, we get 13.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 81

Step 3:
If we divide 130 by 81, we get 1 and a remainder of 49.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 81 from 130 and we're left with 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 81

Going ahead to step 4:
81 can be fit into 499 6 times, resulting in a remainder of 13.
Use 6 as the next digit of our solution. 
Result so far: 116.0
Subtract 486 from 499 to get 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 81

Moving on to step 5:
If we divide 137 by 81, we get 1 and a remainder of 56.
The number 1 becomes the next digit in our result. 
Result so far: 1161.0
Subtract 81 from 137 to get 56.
Include the next digit (2) from the dividend after 56, then repeat: 562 / 81

Moving on to step 6:
81 can be fit into 562 6 times, resulting in a remainder of 76.
Record the quotient 6 as the next digit in the result. 
Result so far: 11616.0
If we subtract 486 from 562, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 7:
If we divide 760 by 81, we get 9 and a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 11616.9
If we take 729 away from 760, we end up with 31.
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 8:
81 goes into 310 3 times with a remainder of 67.
The next digit of our result is 3. 
Result so far: 11616.93
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.

Step 9:
670 divided by 81 is 8 with a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 11616.938
If we take 648 away from 670, we end up 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.

Step 10:
The number 81 fits into 220 2 times, leaving a remainder of 58.
Use 2 as the next digit of our solution. 
Result so far: 11616.9382
Subtracting 162 from 220 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 11:
The number 81 fits into 580 7 times, leaving a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 11616.93827
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 12:
81 can be fit into 130 1 times, resulting in a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 11616.938271
If we take 81 away from 130, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 13:
490 divided by 81 is 6 with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 11616.9382716
Subtract 486 from 490 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
If we divide 40 by 81, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 11616.9382716
If we take 0 away from 40, we end up 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.

The quotient of the division is 11616.9382716, and the remainder is 4e-08.