We divide 654711 by 80
The aim is to understand the frequency of 80 in 654711.

Let's proceed to step 1:
If we divide 6 by 80, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 80

On to step 2:
The number 80 fits into 65 0 times, leaving a remainder of 65.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 65, we end up with 65.
Append the next digit (4) from the dividend to 65 and continue with: 654 / 80

Step 3:
80 can be fit into 654 8 times, resulting in a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 14 after subtracting 640 from 654.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 80

Step 4:
147 divided by 80 is 1 with a remainder of 67.
Put 1 as the next digit of the answer. 
Result so far: 81.0
Subtracting 80 from 147 leaves us with 67.
Include the next digit (1) from the dividend after 67, then repeat: 671 / 80

Going ahead to step 5:
80 can be fit into 671 8 times, resulting in a remainder of 31.
The number 8 becomes the next digit in our result. 
Result so far: 818.0
If we take 640 away from 671, we end up with 31.
Bring next digit (1) of the dividend behind the 31 and repeat the process: 311 / 80

Let's proceed to step 6:
When dividing 311 by 80, we get 3 with a remainder of 71.
Use 3 as the next digit of our solution. 
Result so far: 8183.0
Deduct 240 from 311 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 7:
710 divided by 80 is 8 with a remainder of 70.
The next digit of our result is 8. 
Result so far: 8183.8
The remainder is 70 after subtracting 640 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

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: 8183.88
The remainder is 60 after subtracting 640 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 8183.88 and a remainder of 0.06.