We're dividing 77124318 by 255 
The aim is to understand the frequency of 255 in 77124318.

Step 1:
If we divide 7 by 255, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 255

Let's proceed to step 2:
If we divide 77 by 255, we get 0 and a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Fetch the next digit (1) from the dividend, attach it to 77 and continue: 771 / 255

Moving on to step 3:
If we divide 771 by 255, we get 3 and a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 765 from 771 and we're left with 6.
Include the next digit (2) from the dividend after 6, then repeat: 62 / 255

Advancing to step 4:
If we divide 62 by 255, we get 0 and a remainder of 62.
The next digit of our result is 0. 
Result so far: 30.0
If we take 0 away from 62, we end up with 62.
Include the next digit (4) from the dividend after 62, then repeat: 624 / 255

Advancing to step 5:
The number 255 fits into 624 2 times, leaving a remainder of 114.
Use 2 as the next digit of our solution. 
Result so far: 302.0
Subtract 510 from 624 to get 114.
Append the next digit (3) from the dividend to 114 and continue with: 1143 / 255

Going ahead to step 6:
255 can be fit into 1143 4 times, resulting in a remainder of 123.
Use 4 as the next digit of our solution. 
Result so far: 3024.0
Deduct 1020 from 1143 and we're left with 123.
Include the next digit (1) from the dividend after 123, then repeat: 1231 / 255

Advancing to step 7:
The number 255 fits into 1231 4 times, leaving a remainder of 211.
The next digit of our result is 4. 
Result so far: 30244.0
Subtracting 1020 from 1231 leaves us with 211.
Include the next digit (8) from the dividend after 211, then repeat: 2118 / 255

Moving on to step 8:
255 can be fit into 2118 8 times, resulting in a remainder of 78.
Put 8 as the next digit of the answer. 
Result so far: 302448.0
If we subtract 2040 from 2118, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 9:
When dividing 780 by 255, we get 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 302448.3
Subtracting 765 from 780 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
255 goes into 150 0 times with a remainder of 150.
The next digit of our result is 0. 
Result so far: 302448.3
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 11:
If we divide 1500 by 255, we get 5 and a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 302448.305
If we subtract 1275 from 1500, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 12:
When dividing 2250 by 255, we get 8 with a remainder of 210.
Put 8 as the next digit of the answer. 
Result so far: 302448.3058
Subtract 2040 from 2250 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 13:
255 goes into 2100 8 times with a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 302448.30588
Deduct 2040 from 2100 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final result is 302448.30588 with a remainder of 6e-05.