We look at the division of 572395 by 80 
The aim is to understand the frequency of 80 in 572395.

Going ahead to step 1:
If we divide 5 by 80, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 80

Let's proceed to step 2:
57 divided by 80 is 0 with a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 57, we end up with 57.
Grab the next digit (2) from the dividend, add it to 57, then carry on: 572 / 80

Step 3:
When dividing 572 by 80, we get 7 with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 560 from 572 leaves us with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 80

Advancing to step 4:
The number 80 fits into 123 1 times, leaving a remainder of 43.
Record the quotient 1 as the next digit in the result. 
Result so far: 71.0
Subtract 80 from 123 to get 43.
Fetch the next digit (9) from the dividend, attach it to 43 and continue: 439 / 80

Advancing to step 5:
When dividing 439 by 80, we get 5 with a remainder of 39.
Record the quotient 5 as the next digit in the result. 
Result so far: 715.0
Subtracting 400 from 439 leaves us with 39.
Grab the next digit (5) from the dividend, add it to 39, then carry on: 395 / 80

Advancing to step 6:
When dividing 395 by 80, we get 4 with a remainder of 75.
Write down 4 as next digit of the result. 
Result so far: 7154.0
If we subtract 320 from 395, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 7:
750 divided by 80 is 9 with a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 7154.9
The remainder is 30 after subtracting 720 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
The number 80 fits into 300 3 times, leaving a remainder of 60.
The number 3 becomes the next digit in our result. 
Result so far: 7154.93
If we take 240 away from 300, we end up 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.

Step 9:
80 goes into 600 7 times with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 7154.937
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.

Going ahead 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: 7154.9375
Deduct 400 from 400 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.

Moving on to step 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 7154.9375
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.

Moving on to step 12:
80 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7154.9375
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 7154.9375 and a remainder of 0.0.