We're dividing 822991 by 80 
The aim is to understand the frequency of 80 in 822991.

Going ahead to step 1:
80 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (2) from the dividend to 8 and continue with: 82 / 80

Step 2:
When dividing 82 by 80, we get 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 2 after subtracting 80 from 82.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 80

Moving on to step 3:
When dividing 22 by 80, we get 0 with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 22 leaves us with 22.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 80

Step 4:
The number 80 fits into 229 2 times, leaving a remainder of 69.
Record the quotient 2 as the next digit in the result. 
Result so far: 102.0
Subtracting 160 from 229 leaves us with 69.
Append the next digit (9) from the dividend to 69 and continue with: 699 / 80

Going ahead to step 5:
80 goes into 699 8 times with a remainder of 59.
The next digit of our result is 8. 
Result so far: 1028.0
The remainder is 59 after subtracting 640 from 699.
Append the next digit (1) from the dividend to 59 and continue with: 591 / 80

On to step 6:
80 goes into 591 7 times with a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 10287.0
Subtract 560 from 591 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
80 goes into 310 3 times with a remainder of 70.
The next digit of our result is 3. 
Result so far: 10287.3
Subtract 240 from 310 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
80 can be fit into 700 8 times, resulting in a remainder of 60.
Write down 8 as next digit of the result. 
Result so far: 10287.38
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.

On to step 9:
80 goes into 600 7 times with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 10287.387
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.
Use 5 as the next digit of our solution. 
Result so far: 10287.3875
Subtracting 400 from 400 leaves us 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.

On to step 11:
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: 10287.3875
Subtracting 0 from 0 leaves us 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.

On to step 12:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 10287.3875
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 outcome is 10287.3875, with a leftover of 0.0.