We look at the division of 183409 by 80 
The aim is to understand the frequency of 80 in 183409.

On to step 1:
1 divided by 80 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 80

Step 2:
When dividing 18 by 80, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 80

Let's proceed to step 3:
80 can be fit into 183 2 times, resulting in a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 160 from 183 to get 23.
Take the next digit (4) from the dividend and append it to 23, then repeat: 234 / 80

Step 4:
234 divided by 80 is 2 with a remainder of 74.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 160 from 234 to get 74.
Append the next digit (0) from the dividend to 74 and continue with: 740 / 80

On to step 5:
740 divided by 80 is 9 with a remainder of 20.
The number 9 becomes the next digit in our result. 
Result so far: 229.0
Subtract 720 from 740 to get 20.
Bring next digit (9) of the dividend behind the 20 and repeat the process: 209 / 80

On to step 6:
If we divide 209 by 80, we get 2 and a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 2292.0
If we subtract 160 from 209, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 7:
490 divided by 80 is 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 2292.6
Subtract 480 from 490 to get 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 8:
The number 80 fits into 100 1 times, leaving a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 2292.61
Subtract 80 from 100 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.

Going ahead to step 9:
If we divide 200 by 80, we get 2 and a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 2292.612
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.

On to step 10:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 2292.6125
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.

Let's proceed to step 11:
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: 2292.6125
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.

Let's proceed to step 12:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 2292.6125
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 2292.6125 with a remaining 0.0.