We look at the division of 452619 by 77 
The aim is to understand the frequency of 77 in 452619.

Going ahead to step 1:
If we divide 4 by 77, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 77

On to step 2:
77 can be fit into 45 0 times, resulting in a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 45 to get 45.
Take the next digit (2) from the dividend and append it to 45, then repeat: 452 / 77

On to step 3:
The number 77 fits into 452 5 times, leaving a remainder of 67.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 385 from 452 to get 67.
Include the next digit (6) from the dividend after 67, then repeat: 676 / 77

On to step 4:
77 can be fit into 676 8 times, resulting in a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 58.0
If we take 616 away from 676, we end up with 60.
Bring next digit (1) of the dividend behind the 60 and repeat the process: 601 / 77

Advancing to step 5:
The number 77 fits into 601 7 times, leaving a remainder of 62.
Write down 7 as next digit of the result. 
Result so far: 587.0
Subtract 539 from 601 to get 62.
Append the next digit (9) from the dividend to 62 and continue with: 629 / 77

Advancing to step 6:
77 can be fit into 629 8 times, resulting in a remainder of 13.
Write down 8 as next digit of the result. 
Result so far: 5878.0
Deduct 616 from 629 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
77 goes into 130 1 times with a remainder of 53.
Write down 1 as next digit of the result. 
Result so far: 5878.1
Subtracting 77 from 130 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 8:
77 can be fit into 530 6 times, resulting in a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 5878.16
If we subtract 462 from 530, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 9:
77 goes into 680 8 times with a remainder of 64.
Put 8 as the next digit of the answer. 
Result so far: 5878.168
Subtracting 616 from 680 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
640 divided by 77 is 8 with a remainder of 24.
Put 8 as the next digit of the answer. 
Result so far: 5878.1688
If we subtract 616 from 640, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 5878.1688, with a leftover of 0.00024.