We're dividing 63557628 by 77 
The aim is to understand the frequency of 77 in 63557628.

Moving on to step 1:
When dividing 6 by 77, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 77

Advancing to step 2:
77 can be fit into 63 0 times, resulting in a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Bring next digit (5) of the dividend behind the 63 and repeat the process: 635 / 77

Going ahead to step 3:
635 divided by 77 is 8 with a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 616 from 635 to get 19.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 77

Going ahead to step 4:
When dividing 195 by 77, we get 2 with a remainder of 41.
Use 2 as the next digit of our solution. 
Result so far: 82.0
Subtract 154 from 195 to get 41.
Fetch the next digit (7) from the dividend, attach it to 41 and continue: 417 / 77

Let's proceed to step 5:
417 divided by 77 is 5 with a remainder of 32.
The next digit of our result is 5. 
Result so far: 825.0
Subtract 385 from 417 to get 32.
Take the next digit (6) from the dividend and append it to 32, then repeat: 326 / 77

Let's proceed to step 6:
The number 77 fits into 326 4 times, leaving a remainder of 18.
The next digit of our result is 4. 
Result so far: 8254.0
Deduct 308 from 326 and we're left with 18.
Append the next digit (2) from the dividend to 18 and continue with: 182 / 77

Going ahead to step 7:
182 divided by 77 is 2 with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 82542.0
Subtract 154 from 182 to get 28.
Bring next digit (8) of the dividend behind the 28 and repeat the process: 288 / 77

On to step 8:
288 divided by 77 is 3 with a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 825423.0
If we take 231 away from 288, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 9:
570 divided by 77 is 7 with a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 825423.7
Deduct 539 from 570 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 10:
77 can be fit into 310 4 times, resulting in a remainder of 2.
The next digit of our result is 4. 
Result so far: 825423.74
If we take 308 away from 310, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
When dividing 20 by 77, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 825423.74
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
If we divide 200 by 77, we get 2 and a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 825423.7402
If we subtract 154 from 200, 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 13:
460 divided by 77 is 5 with a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 825423.74025
Subtract 385 from 460 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 14:
77 can be fit into 750 9 times, resulting in a remainder of 57.
Record the quotient 9 as the next digit in the result. 
Result so far: 825423.740259
Deduct 693 from 750 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 15:
The number 77 fits into 570 7 times, leaving a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 825423.7402597
Deduct 539 from 570 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 16:
77 goes into 310 4 times with a remainder of 2.
The next digit of our result is 4. 
Result so far: 825423.74025974
If we subtract 308 from 310, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 825423.74025974 and a remainder of 2e-09.