Let's divide 835339 by 81
The aim is to understand the frequency of 81 in 835339.

Step 1:
The number 81 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 81

Advancing to step 2:
81 can be fit into 83 1 times, resulting in a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 81 away from 83, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 81

Step 3:
81 goes into 25 0 times with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 25, we end up with 25.
Append the next digit (3) from the dividend to 25 and continue with: 253 / 81

On to step 4:
When dividing 253 by 81, we get 3 with a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 103.0
The remainder is 10 after subtracting 243 from 253.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 81

Going ahead to step 5:
103 divided by 81 is 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1031.0
Subtracting 81 from 103 leaves us with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 81

On to step 6:
81 can be fit into 229 2 times, resulting in a remainder of 67.
The next digit of our result is 2. 
Result so far: 10312.0
If we subtract 162 from 229, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 7:
When dividing 670 by 81, we get 8 with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 10312.8
Subtracting 648 from 670 leaves us 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 8:
81 can be fit into 220 2 times, resulting in a remainder of 58.
Record the quotient 2 as the next digit in the result. 
Result so far: 10312.82
The remainder is 58 after subtracting 162 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
If we divide 580 by 81, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 10312.827
Subtract 567 from 580 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 10:
If we divide 130 by 81, we get 1 and a remainder of 49.
The next digit of our result is 1. 
Result so far: 10312.8271
If we subtract 81 from 130, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 11:
81 goes into 490 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 10312.82716
If we take 486 away from 490, we end up 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.

Let's proceed to step 12:
81 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 10312.82716
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.

Let's proceed to step 13:
When dividing 400 by 81, we get 4 with a remainder of 76.
Use 4 as the next digit of our solution. 
Result so far: 10312.8271604
If we take 324 away from 400, we end up with 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:
81 goes into 760 9 times with a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 10312.82716049
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.

After the division, we end up with 10312.82716049 and a remainder of 3.1e-08.