We're dividing 439457 by 80 
The aim is to understand the frequency of 80 in 439457.

Moving on to step 1:
If we divide 4 by 80, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 80

Moving on to step 2:
The number 80 fits into 43 0 times, leaving a remainder of 43.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 43 and we're left with 43.
Take the next digit (9) from the dividend and append it to 43, then repeat: 439 / 80

Advancing to step 3:
If we divide 439 by 80, we get 5 and a remainder of 39.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 400 from 439 and we're left with 39.
Bring next digit (4) of the dividend behind the 39 and repeat the process: 394 / 80

Moving on to step 4:
80 goes into 394 4 times with a remainder of 74.
The next digit of our result is 4. 
Result so far: 54.0
Subtracting 320 from 394 leaves us with 74.
Append the next digit (5) from the dividend to 74 and continue with: 745 / 80

Let's proceed to step 5:
80 goes into 745 9 times with a remainder of 25.
The number 9 becomes the next digit in our result. 
Result so far: 549.0
Subtract 720 from 745 to get 25.
Append the next digit (7) from the dividend to 25 and continue with: 257 / 80

On to step 6:
If we divide 257 by 80, we get 3 and a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 5493.0
If we subtract 240 from 257, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
When dividing 170 by 80, we get 2 with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 5493.2
Subtracting 160 from 170 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 80, we get 1 and a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 5493.21
If we take 80 away from 100, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
200 divided by 80 is 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 5493.212
Deduct 160 from 200 and we're left 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 10:
80 goes into 400 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 5493.2125
Subtract 400 from 400 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5493.2125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5493.2125
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 5493.2125, with a leftover of 0.0.