331536 divided by 77 
The aim is to understand the frequency of 77 in 331536.

Going ahead to step 1:
If we divide 3 by 77, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 77

Advancing to step 2:
If we divide 33 by 77, we get 0 and a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Fetch the next digit (1) from the dividend, attach it to 33 and continue: 331 / 77

On to step 3:
77 can be fit into 331 4 times, resulting in a remainder of 23.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 308 from 331, we get 23.
Append the next digit (5) from the dividend to 23 and continue with: 235 / 77

Let's proceed to step 4:
77 can be fit into 235 3 times, resulting in a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 43.0
If we subtract 231 from 235, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 77

On to step 5:
43 divided by 77 is 0 with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 430.0
Subtracting 0 from 43 leaves us with 43.
Grab the next digit (6) from the dividend, add it to 43, then carry on: 436 / 77

Let's proceed to step 6:
436 divided by 77 is 5 with a remainder of 51.
The next digit of our result is 5. 
Result so far: 4305.0
The remainder is 51 after subtracting 385 from 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 7:
77 can be fit into 510 6 times, resulting in a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 4305.6
If we take 462 away from 510, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 8:
If we divide 480 by 77, we get 6 and a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 4305.66
The remainder is 18 after subtracting 462 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Our division results in 4305.66 with a remaining 0.018.