540559 ÷ 80 
The aim is to understand the frequency of 80 in 540559.

Step 1:
The number 80 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 80

Step 2:
When dividing 54 by 80, we get 0 with a remainder of 54.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Bring next digit (0) of the dividend behind the 54 and repeat the process: 540 / 80

Let's proceed to step 3:
The number 80 fits into 540 6 times, leaving a remainder of 60.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 60 after subtracting 480 from 540.
Bring next digit (5) of the dividend behind the 60 and repeat the process: 605 / 80

Let's proceed to step 4:
When dividing 605 by 80, we get 7 with a remainder of 45.
The next digit of our result is 7. 
Result so far: 67.0
Subtract 560 from 605 to get 45.
Include the next digit (5) from the dividend after 45, then repeat: 455 / 80

Going ahead to step 5:
When dividing 455 by 80, we get 5 with a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 675.0
Subtracting 400 from 455 leaves us with 55.
Take the next digit (9) from the dividend and append it to 55, then repeat: 559 / 80

Let's proceed to step 6:
The number 80 fits into 559 6 times, leaving a remainder of 79.
Write down 6 as next digit of the result. 
Result so far: 6756.0
Deduct 480 from 559 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 7:
The number 80 fits into 790 9 times, leaving a remainder of 70.
The number 9 becomes the next digit in our result. 
Result so far: 6756.9
Subtracting 720 from 790 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
80 can be fit into 700 8 times, resulting in a remainder of 60.
The next digit of our result is 8. 
Result so far: 6756.98
Deduct 640 from 700 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.

Let's proceed to step 9:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 6756.987
The remainder is 40 after subtracting 560 from 600.
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.
Write down 5 as next digit of the result. 
Result so far: 6756.9875
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.

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: 6756.9875
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.

Going ahead to step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6756.9875
If we subtract 0 from 0, we 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.

Our division results in 6756.9875 with a remaining 0.0.