We look at the division of 674587 by 80 
The aim is to understand the frequency of 80 in 674587.

On to step 1:
If we divide 6 by 80, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 80

Step 2:
80 goes into 67 0 times with a remainder of 67.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Fetch the next digit (4) from the dividend, attach it to 67 and continue: 674 / 80

Going ahead to step 3:
674 divided by 80 is 8 with a remainder of 34.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 640 from 674 to get 34.
Include the next digit (5) from the dividend after 34, then repeat: 345 / 80

Moving on to step 4:
If we divide 345 by 80, we get 4 and a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 84.0
If we subtract 320 from 345, we get 25.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 80

Moving on to step 5:
If we divide 258 by 80, we get 3 and a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 843.0
Deduct 240 from 258 and we're left with 18.
Take the next digit (7) from the dividend and append it to 18, then repeat: 187 / 80

On to step 6:
80 can be fit into 187 2 times, resulting in a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 8432.0
Subtract 160 from 187 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 7:
80 goes into 270 3 times with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 8432.3
Deduct 240 from 270 and we're left with 30.
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.
Use 3 as the next digit of our solution. 
Result so far: 8432.33
Subtracting 240 from 300 leaves us 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.

In conclusion, the division gives 8432.33 with a balance of 0.06.