Let's divide 8690 by 80
The aim is to understand the frequency of 80 in 8690.

Let's proceed to step 1:
When dividing 8 by 80, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 80

Step 2:
80 goes into 86 1 times with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 80 from 86 and we're left with 6.
Grab the next digit (9) from the dividend, add it to 6, then carry on: 69 / 80

Let's proceed to step 3:
When dividing 69 by 80, we get 0 with a remainder of 69.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 69 after subtracting 0 from 69.
Grab the next digit (0) from the dividend, add it to 69, then carry on: 690 / 80

On to step 4:
If we divide 690 by 80, we get 8 and a remainder of 50.
Put 8 as the next digit of the answer. 
Result so far: 108.0
If we subtract 640 from 690, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 5:
80 can be fit into 500 6 times, resulting in a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 108.6
If we take 480 away from 500, we end up 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.

Moving on to step 6:
200 divided by 80 is 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 108.62
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.

Let's proceed to step 7:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 108.625
If we subtract 400 from 400, 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.

Going ahead to step 8:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 108.625
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.

Advancing to step 9:
0 divided by 80 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 108.625
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 108.625, and the remainder is 0.0.