408437 ÷ 80 
The aim is to understand the frequency of 80 in 408437.

Let's proceed to step 1:
If we divide 4 by 80, we get 0 and a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 80

Step 2:
80 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 40, we get 40.
Grab the next digit (8) from the dividend, add it to 40, then carry on: 408 / 80

Advancing to step 3:
The number 80 fits into 408 5 times, leaving a remainder of 8.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 400 from 408 leaves us with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 80

Advancing to step 4:
84 divided by 80 is 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 51.0
The remainder is 4 after subtracting 80 from 84.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 80

Step 5:
80 can be fit into 43 0 times, resulting in a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 510.0
Subtract 0 from 43 to get 43.
Bring next digit (7) of the dividend behind the 43 and repeat the process: 437 / 80

On to step 6:
80 can be fit into 437 5 times, resulting in a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 5105.0
Subtracting 400 from 437 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
370 divided by 80 is 4 with a remainder of 50.
The next digit of our result is 4. 
Result so far: 5105.4
If we subtract 320 from 370, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
If we divide 500 by 80, we get 6 and a remainder of 20.
The next digit of our result is 6. 
Result so far: 5105.46
If we subtract 480 from 500, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
80 goes into 200 2 times with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 5105.462
The remainder is 40 after subtracting 160 from 200.
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:
400 divided by 80 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 5105.4625
The remainder is 0 after subtracting 400 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5105.4625
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5105.4625
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 5105.4625 and a remainder of 0.0.