Let's divide 97358687 by 80
The aim is to understand the frequency of 80 in 97358687.

Let's proceed to step 1:
When dividing 9 by 80, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 80

Going ahead to step 2:
97 divided by 80 is 1 with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 80 from 97 leaves us with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 80

Let's proceed to step 3:
The number 80 fits into 173 2 times, leaving a remainder of 13.
Use 2 as the next digit of our solution. 
Result so far: 12.0
If we subtract 160 from 173, we get 13.
Include the next digit (5) from the dividend after 13, then repeat: 135 / 80

On to step 4:
80 can be fit into 135 1 times, resulting in a remainder of 55.
Put 1 as the next digit of the answer. 
Result so far: 121.0
Subtracting 80 from 135 leaves us with 55.
Take the next digit (8) from the dividend and append it to 55, then repeat: 558 / 80

On to step 5:
80 can be fit into 558 6 times, resulting in a remainder of 78.
Record the quotient 6 as the next digit in the result. 
Result so far: 1216.0
If we subtract 480 from 558, we get 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 80

Going ahead to step 6:
80 can be fit into 786 9 times, resulting in a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 12169.0
Subtract 720 from 786 to get 66.
Take the next digit (8) from the dividend and append it to 66, then repeat: 668 / 80

On to step 7:
The number 80 fits into 668 8 times, leaving a remainder of 28.
The next digit of our result is 8. 
Result so far: 121698.0
Subtract 640 from 668 to get 28.
Fetch the next digit (7) from the dividend, attach it to 28 and continue: 287 / 80

Going ahead to step 8:
When dividing 287 by 80, we get 3 with a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 1216983.0
The remainder is 47 after subtracting 240 from 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 9:
The number 80 fits into 470 5 times, leaving a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 1216983.5
Subtract 400 from 470 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.

Step 10:
80 can be fit into 700 8 times, resulting in a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 1216983.58
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.

Advancing to step 11:
80 goes into 600 7 times with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 1216983.587
Subtract 560 from 600 to 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.

Moving on to step 12:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 1216983.5875
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.

On to step 13:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1216983.5875
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.

Let's proceed to step 14:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1216983.5875
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 1216983.5875 with a remainder of 0.0.