We're dividing 936035 by 81 
The aim is to understand the frequency of 81 in 936035.

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
If we subtract 0 from 9, we get 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 81

Advancing to step 2:
When dividing 93 by 81, we get 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 81 from 93 leaves us with 12.
Bring next digit (6) of the dividend behind the 12 and repeat the process: 126 / 81

On to step 3:
When dividing 126 by 81, we get 1 with a remainder of 45.
The next digit of our result is 1. 
Result so far: 11.0
Deduct 81 from 126 and we're left with 45.
Include the next digit (0) from the dividend after 45, then repeat: 450 / 81

Going ahead to step 4:
If we divide 450 by 81, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 115.0
The remainder is 45 after subtracting 405 from 450.
Grab the next digit (3) from the dividend, add it to 45, then carry on: 453 / 81

Moving on to step 5:
81 goes into 453 5 times with a remainder of 48.
The number 5 becomes the next digit in our result. 
Result so far: 1155.0
Subtracting 405 from 453 leaves us with 48.
Append the next digit (5) from the dividend to 48 and continue with: 485 / 81

Let's proceed to step 6:
If we divide 485 by 81, we get 5 and a remainder of 80.
The next digit of our result is 5. 
Result so far: 11555.0
Deduct 405 from 485 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 7:
81 goes into 800 9 times with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 11555.9
Deduct 729 from 800 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 8:
81 goes into 710 8 times with a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 11555.98
The remainder is 62 after subtracting 648 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 9:
620 divided by 81 is 7 with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 11555.987
Subtracting 567 from 620 leaves us 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.

Moving on to step 10:
When dividing 530 by 81, we get 6 with a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 11555.9876
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.

Advancing to step 11:
440 divided by 81 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 11555.98765
Deduct 405 from 440 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.

Step 12:
350 divided by 81 is 4 with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 11555.987654
The remainder is 26 after subtracting 324 from 350.
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 13:
If we divide 260 by 81, we get 3 and a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 11555.9876543
The remainder is 17 after subtracting 243 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 14:
170 divided by 81 is 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 11555.98765432
If we take 162 away from 170, we end up 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.

Our division results in 11555.98765432 with a remaining 8e-09.