We're dividing 439065 by 81 
The aim is to understand the frequency of 81 in 439065.

Moving on to step 1:
4 divided by 81 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 81

Let's proceed to step 2:
81 goes into 43 0 times with a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 43 after subtracting 0 from 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 81

Let's proceed to step 3:
The number 81 fits into 439 5 times, leaving a remainder of 34.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 405 from 439, we get 34.
Fetch the next digit (0) from the dividend, attach it to 34 and continue: 340 / 81

On to step 4:
340 divided by 81 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Subtracting 324 from 340 leaves us with 16.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 81

Moving on to step 5:
The number 81 fits into 166 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 542.0
If we take 162 away from 166, we end up with 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 81

Going ahead to step 6:
When dividing 45 by 81, we get 0 with a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 5420.0
Subtracting 0 from 45 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
81 can be fit into 450 5 times, resulting in a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 5420.5
Subtract 405 from 450 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 8:
If we divide 450 by 81, we get 5 and a remainder of 45.
The next digit of our result is 5. 
Result so far: 5420.55
Deduct 405 from 450 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

The final outcome is 5420.55, with a leftover of 0.045.