We look at the division of 8761354 by 80 
The aim is to understand the frequency of 80 in 8761354.

Let's proceed to step 1:
8 divided by 80 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 80

On to step 2:
If we divide 87 by 80, we get 1 and a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 80 from 87 leaves us with 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 80

Advancing to step 3:
80 goes into 76 0 times with a remainder of 76.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 76 after subtracting 0 from 76.
Bring next digit (1) of the dividend behind the 76 and repeat the process: 761 / 80

On to step 4:
80 goes into 761 9 times with a remainder of 41.
Put 9 as the next digit of the answer. 
Result so far: 109.0
If we subtract 720 from 761, we get 41.
Take the next digit (3) from the dividend and append it to 41, then repeat: 413 / 80

Step 5:
80 goes into 413 5 times with a remainder of 13.
The next digit of our result is 5. 
Result so far: 1095.0
The remainder is 13 after subtracting 400 from 413.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 80

Step 6:
When dividing 135 by 80, we get 1 with a remainder of 55.
Write down 1 as next digit of the result. 
Result so far: 10951.0
If we take 80 away from 135, we end up with 55.
Take the next digit (4) from the dividend and append it to 55, then repeat: 554 / 80

Going ahead to step 7:
The number 80 fits into 554 6 times, leaving a remainder of 74.
Record the quotient 6 as the next digit in the result. 
Result so far: 109516.0
If we take 480 away from 554, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 8:
When dividing 740 by 80, we get 9 with a remainder of 20.
Record the quotient 9 as the next digit in the result. 
Result so far: 109516.9
Subtract 720 from 740 to get 20.
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 9:
The number 80 fits into 200 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 109516.92
If we subtract 160 from 200, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 10:
400 divided by 80 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 109516.925
Subtract 400 from 400 to 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.

Moving on to step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 109516.925
Subtract 0 from 0 to 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.

On to step 12:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 109516.925
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.

The final result is 109516.925 with a remainder of 0.0.