We're dividing 255966 by 80 
The aim is to understand the frequency of 80 in 255966.

On to step 1:
The number 80 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 80

Let's proceed to step 2:
If we divide 25 by 80, we get 0 and a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Include the next digit (5) from the dividend after 25, then repeat: 255 / 80

Let's proceed to step 3:
80 can be fit into 255 3 times, resulting in a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 240 from 255, we get 15.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 80

Moving on to step 4:
159 divided by 80 is 1 with a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 31.0
The remainder is 79 after subtracting 80 from 159.
Include the next digit (6) from the dividend after 79, then repeat: 796 / 80

Moving on to step 5:
80 goes into 796 9 times with a remainder of 76.
The number 9 becomes the next digit in our result. 
Result so far: 319.0
Subtracting 720 from 796 leaves us with 76.
Append the next digit (6) from the dividend to 76 and continue with: 766 / 80

Step 6:
When dividing 766 by 80, we get 9 with a remainder of 46.
Record the quotient 9 as the next digit in the result. 
Result so far: 3199.0
If we subtract 720 from 766, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 7:
When dividing 460 by 80, we get 5 with a remainder of 60.
The next digit of our result is 5. 
Result so far: 3199.5
The remainder is 60 after subtracting 400 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
600 divided by 80 is 7 with a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 3199.57
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
80 can be fit into 400 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 3199.575
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.

Advancing to step 10:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 3199.575
If we take 0 away from 0, we end up 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 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 3199.575
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.

The final outcome is 3199.575, with a leftover of 0.0.