We divide 999577 by 80
The aim is to understand the frequency of 80 in 999577.

Going ahead to step 1:
When dividing 9 by 80, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 80

On to step 2:
When dividing 99 by 80, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 80 away from 99, we end up with 19.
Append the next digit (9) from the dividend to 19 and continue with: 199 / 80

Moving on to step 3:
80 goes into 199 2 times with a remainder of 39.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 39 after subtracting 160 from 199.
Append the next digit (5) from the dividend to 39 and continue with: 395 / 80

Going ahead to step 4:
80 goes into 395 4 times with a remainder of 75.
Use 4 as the next digit of our solution. 
Result so far: 124.0
If we take 320 away from 395, we end up with 75.
Take the next digit (7) from the dividend and append it to 75, then repeat: 757 / 80

Advancing to step 5:
The number 80 fits into 757 9 times, leaving a remainder of 37.
Record the quotient 9 as the next digit in the result. 
Result so far: 1249.0
If we subtract 720 from 757, we get 37.
Bring next digit (7) of the dividend behind the 37 and repeat the process: 377 / 80

Advancing to step 6:
If we divide 377 by 80, we get 4 and a remainder of 57.
Put 4 as the next digit of the answer. 
Result so far: 12494.0
If we subtract 320 from 377, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 7:
80 goes into 570 7 times with a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 12494.7
The remainder is 10 after subtracting 560 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
When dividing 100 by 80, we get 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 12494.71
Deduct 80 from 100 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 80, we get 2 and a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 12494.712
Subtracting 160 from 200 leaves us 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.

Advancing to step 10:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 12494.7125
If we take 400 away from 400, we end up 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.

Let's proceed to step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12494.7125
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.

Let's proceed to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 12494.7125
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.

The quotient of the division is 12494.7125, and the remainder is 0.0.