We divide 681560 by 80
The aim is to understand the frequency of 80 in 681560.

Moving on to step 1:
80 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 80

Step 2:
The number 80 fits into 68 0 times, leaving a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Include the next digit (1) from the dividend after 68, then repeat: 681 / 80

On to step 3:
If we divide 681 by 80, we get 8 and a remainder of 41.
The next digit of our result is 8. 
Result so far: 8.0
Deduct 640 from 681 and we're left with 41.
Include the next digit (5) from the dividend after 41, then repeat: 415 / 80

Going ahead to step 4:
When dividing 415 by 80, we get 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 85.0
Deduct 400 from 415 and we're left with 15.
Grab the next digit (6) from the dividend, add it to 15, then carry on: 156 / 80

Advancing to step 5:
80 goes into 156 1 times with a remainder of 76.
Write down 1 as next digit of the result. 
Result so far: 851.0
Subtract 80 from 156 to get 76.
Include the next digit (0) from the dividend after 76, then repeat: 760 / 80

Moving on to step 6:
760 divided by 80 is 9 with a remainder of 40.
Put 9 as the next digit of the answer. 
Result so far: 8519.0
Subtract 720 from 760 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 7:
80 goes into 400 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 8519.5
If we subtract 400 from 400, 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.

Let's proceed to step 8:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8519.5
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.

Step 9:
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: 8519.5
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.

The final result is 8519.5 with a remainder of 0.0.