We're dividing 255905 by 77 
The aim is to understand the frequency of 77 in 255905.

Going ahead to step 1:
77 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 77

Step 2:
25 divided by 77 is 0 with a remainder of 25.
Record the quotient 0 as the next digit in the 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 / 77

On to step 3:
If we divide 255 by 77, we get 3 and a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 231 from 255, we get 24.
Append the next digit (9) from the dividend to 24 and continue with: 249 / 77

Advancing to step 4:
77 goes into 249 3 times with a remainder of 18.
Write down 3 as next digit of the result. 
Result so far: 33.0
If we take 231 away from 249, we end up with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 77

On to step 5:
If we divide 180 by 77, we get 2 and a remainder of 26.
The next digit of our result is 2. 
Result so far: 332.0
If we subtract 154 from 180, we get 26.
Take the next digit (5) from the dividend and append it to 26, then repeat: 265 / 77

Step 6:
When dividing 265 by 77, we get 3 with a remainder of 34.
The next digit of our result is 3. 
Result so far: 3323.0
If we take 231 away from 265, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 7:
If we divide 340 by 77, we get 4 and a remainder of 32.
The next digit of our result is 4. 
Result so far: 3323.4
Subtract 308 from 340 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 8:
The number 77 fits into 320 4 times, leaving a remainder of 12.
The next digit of our result is 4. 
Result so far: 3323.44
If we take 308 away from 320, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 3323.44 with a remainder of 0.012.