445122 divided by 81 
The aim is to understand the frequency of 81 in 445122.

On to step 1:
81 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 81

Step 2:
44 divided by 81 is 0 with a remainder of 44.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 44 after subtracting 0 from 44.
Fetch the next digit (5) from the dividend, attach it to 44 and continue: 445 / 81

Advancing to step 3:
81 goes into 445 5 times with a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 405 from 445 leaves us with 40.
Append the next digit (1) from the dividend to 40 and continue with: 401 / 81

Moving on to step 4:
401 divided by 81 is 4 with a remainder of 77.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Deduct 324 from 401 and we're left with 77.
Include the next digit (2) from the dividend after 77, then repeat: 772 / 81

Advancing to step 5:
81 goes into 772 9 times with a remainder of 43.
Use 9 as the next digit of our solution. 
Result so far: 549.0
If we take 729 away from 772, we end up with 43.
Fetch the next digit (2) from the dividend, attach it to 43 and continue: 432 / 81

On to step 6:
The number 81 fits into 432 5 times, leaving a remainder of 27.
Put 5 as the next digit of the answer. 
Result so far: 5495.0
If we take 405 away from 432, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 7:
If we divide 270 by 81, we get 3 and a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 5495.3
If we subtract 243 from 270, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 8:
81 can be fit into 270 3 times, resulting in a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 5495.33
The remainder is 27 after subtracting 243 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 5495.33, with a leftover of 0.027.