We're dividing 324886 by 81 
The aim is to understand the frequency of 81 in 324886.

Step 1:
The number 81 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 81

On to step 2:
When dividing 32 by 81, we get 0 with a remainder of 32.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 32, we get 32.
Take the next digit (4) from the dividend and append it to 32, then repeat: 324 / 81

Moving on to step 3:
If we divide 324 by 81, we get 4 and a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 324 from 324 and we're left with 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 81

Let's proceed to step 4:
81 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 40.0
If we subtract 0 from 8, we get 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 81

On to step 5:
81 goes into 88 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 401.0
If we subtract 81 from 88, we get 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 81

Advancing to step 6:
When dividing 76 by 81, we get 0 with a remainder of 76.
Put 0 as the next digit of the answer. 
Result so far: 4010.0
Deduct 0 from 76 and we're left 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.

Going ahead 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: 4010.9
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.

Going ahead to step 8:
81 can be fit into 310 3 times, resulting in a remainder of 67.
The number 3 becomes the next digit in our result. 
Result so far: 4010.93
If we subtract 243 from 310, 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.

Step 9:
670 divided by 81 is 8 with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 4010.938
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.

Moving on to step 10:
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: 4010.9382
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.

Moving on to step 11:
81 goes into 580 7 times with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 4010.93827
The remainder is 13 after subtracting 567 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
81 can be fit into 130 1 times, resulting in a remainder of 49.
The next digit of our result is 1. 
Result so far: 4010.938271
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.

On to step 13:
81 goes into 490 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 4010.9382716
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.

Going ahead to step 14:
81 goes into 40 0 times with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 4010.9382716
Subtracting 0 from 40 leaves us 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.

Our division results in 4010.9382716 with a remaining 4e-08.