We divide 404223 by 81
The aim is to understand the frequency of 81 in 404223.

Moving on to step 1:
81 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (0) from the dividend after 4, then repeat: 40 / 81

On to step 2:
If we divide 40 by 81, we get 0 and a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Include the next digit (4) from the dividend after 40, then repeat: 404 / 81

On to step 3:
81 goes into 404 4 times with a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 324 away from 404, we end up with 80.
Include the next digit (2) from the dividend after 80, then repeat: 802 / 81

Advancing to step 4:
If we divide 802 by 81, we get 9 and a remainder of 73.
Put 9 as the next digit of the answer. 
Result so far: 49.0
Subtract 729 from 802 to get 73.
Take the next digit (2) from the dividend and append it to 73, then repeat: 732 / 81

On to step 5:
81 goes into 732 9 times with a remainder of 3.
The next digit of our result is 9. 
Result so far: 499.0
If we subtract 729 from 732, we get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 81

On to step 6:
The number 81 fits into 33 0 times, leaving a remainder of 33.
The number 0 becomes the next digit in our result. 
Result so far: 4990.0
Subtract 0 from 33 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 7:
81 goes into 330 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 4990.4
If we take 324 away from 330, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 8:
When dividing 60 by 81, we get 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 4990.4
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 9:
81 can be fit into 600 7 times, resulting in a remainder of 33.
Write down 7 as next digit of the result. 
Result so far: 4990.407
Subtract 567 from 600 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 10:
81 can be fit into 330 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 4990.4074
Subtracting 324 from 330 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
60 divided by 81 is 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 4990.4074
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 12:
The number 81 fits into 600 7 times, leaving a remainder of 33.
Put 7 as the next digit of the answer. 
Result so far: 4990.407407
Subtract 567 from 600 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 13:
If we divide 330 by 81, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 4990.4074074
Deduct 324 from 330 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 14:
81 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 4990.4074074
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 4990.4074074 and a remainder of 6e-08.