We're dividing 428902 by 80 
The aim is to understand the frequency of 80 in 428902.

Let's proceed to step 1:
The number 80 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 80

Step 2:
42 divided by 80 is 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 42 to get 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 80

On to step 3:
80 goes into 428 5 times with a remainder of 28.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 400 away from 428, we end up with 28.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 80

Step 4:
The number 80 fits into 289 3 times, leaving a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 53.0
Subtracting 240 from 289 leaves us with 49.
Take the next digit (0) from the dividend and append it to 49, then repeat: 490 / 80

Let's proceed to step 5:
490 divided by 80 is 6 with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 536.0
If we take 480 away from 490, we end up with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 80

Advancing to step 6:
If we divide 102 by 80, we get 1 and a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 5361.0
If we subtract 80 from 102, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 7:
80 can be fit into 220 2 times, resulting in a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 5361.2
Deduct 160 from 220 and we're left 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.

Going ahead to step 8:
When dividing 600 by 80, we get 7 with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 5361.27
If we take 560 away from 600, we end up 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.

On to step 9:
If we divide 400 by 80, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 5361.275
Subtracting 400 from 400 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.

Let's proceed to step 10:
If we divide 0 by 80, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 5361.275
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.

Going ahead to step 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 5361.275
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.

After the division, we end up with 5361.275 and a remainder of 0.0.