We look at the division of 77281 by 80 
The aim is to understand the frequency of 80 in 77281.

On to step 1:
When dividing 7 by 80, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 80

Moving on to step 2:
80 can be fit into 77 0 times, resulting in a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Take the next digit (2) from the dividend and append it to 77, then repeat: 772 / 80

Advancing to step 3:
When dividing 772 by 80, we get 9 with a remainder of 52.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Deduct 720 from 772 and we're left with 52.
Fetch the next digit (8) from the dividend, attach it to 52 and continue: 528 / 80

Step 4:
80 goes into 528 6 times with a remainder of 48.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
Deduct 480 from 528 and we're left with 48.
Append the next digit (1) from the dividend to 48 and continue with: 481 / 80

On to step 5:
The number 80 fits into 481 6 times, leaving a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 966.0
Subtract 480 from 481 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 6:
The number 80 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 966.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
80 can be fit into 100 1 times, resulting in a remainder of 20.
Put 1 as the next digit of the answer. 
Result so far: 966.01
The remainder is 20 after subtracting 80 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
80 can be fit into 200 2 times, resulting in a remainder of 40.
The next digit of our result is 2. 
Result so far: 966.012
If we take 160 away from 200, we end up 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.

On to step 9:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 966.0125
Deduct 400 from 400 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.

Let's proceed to step 10:
80 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 966.0125
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.

Step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 966.0125
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.

Our division results in 966.0125 with a remaining 0.0.