911317 divided by 81 
The aim is to understand the frequency of 81 in 911317.

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
If we subtract 0 from 9, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 81

Step 2:
If we divide 91 by 81, we get 1 and a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 81 from 91 leaves us with 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 81

Step 3:
If we divide 101 by 81, we get 1 and a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtracting 81 from 101 leaves us with 20.
Append the next digit (3) from the dividend to 20 and continue with: 203 / 81

Moving on to step 4:
81 goes into 203 2 times with a remainder of 41.
The next digit of our result is 2. 
Result so far: 112.0
The remainder is 41 after subtracting 162 from 203.
Take the next digit (1) from the dividend and append it to 41, then repeat: 411 / 81

Let's proceed to step 5:
411 divided by 81 is 5 with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 1125.0
Subtract 405 from 411 to get 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 81

Going ahead to step 6:
The number 81 fits into 67 0 times, leaving a remainder of 67.
Write down 0 as next digit of the result. 
Result so far: 11250.0
Deduct 0 from 67 and we're left 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.

Let's proceed to step 7:
If we divide 670 by 81, we get 8 and a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 11250.8
The remainder is 22 after subtracting 648 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
81 goes into 220 2 times with a remainder of 58.
The next digit of our result is 2. 
Result so far: 11250.82
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.

Step 9:
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: 11250.827
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 10:
When dividing 130 by 81, we get 1 with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 11250.8271
The remainder is 49 after subtracting 81 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 11:
490 divided by 81 is 6 with a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 11250.82716
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.

Step 12:
81 goes into 40 0 times with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 11250.82716
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 13:
The number 81 fits into 400 4 times, leaving a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 11250.8271604
Subtract 324 from 400 to 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 14:
760 divided by 81 is 9 with a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 11250.82716049
Subtract 729 from 760 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The quotient of the division is 11250.82716049, and the remainder is 3.1e-08.