We look at the division of 628600 by 77 
The aim is to understand the frequency of 77 in 628600.

Going ahead to step 1:
The number 77 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 77

On to step 2:
77 goes into 62 0 times with a remainder of 62.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 62 to get 62.
Append the next digit (8) from the dividend to 62 and continue with: 628 / 77

On to step 3:
The number 77 fits into 628 8 times, leaving a remainder of 12.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 616 from 628 leaves us with 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 77

Advancing to step 4:
When dividing 126 by 77, we get 1 with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
The remainder is 49 after subtracting 77 from 126.
Take the next digit (0) from the dividend and append it to 49, then repeat: 490 / 77

Advancing to step 5:
77 goes into 490 6 times with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 816.0
Subtracting 462 from 490 leaves us with 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 77

Moving on to step 6:
If we divide 280 by 77, we get 3 and a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 8163.0
Subtracting 231 from 280 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 7:
490 divided by 77 is 6 with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 8163.6
If we take 462 away from 490, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 8:
77 goes into 280 3 times with a remainder of 49.
The number 3 becomes the next digit in our result. 
Result so far: 8163.63
Deduct 231 from 280 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 9:
77 goes into 490 6 times with a remainder of 28.
The next digit of our result is 6. 
Result so far: 8163.636
Deduct 462 from 490 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 10:
When dividing 280 by 77, we get 3 with a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 8163.6363
Subtracting 231 from 280 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 11:
When dividing 490 by 77, we get 6 with a remainder of 28.
Write down 6 as next digit of the result. 
Result so far: 8163.63636
If we take 462 away from 490, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
The number 77 fits into 280 3 times, leaving a remainder of 49.
Use 3 as the next digit of our solution. 
Result so far: 8163.636363
The remainder is 49 after subtracting 231 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 13:
77 can be fit into 490 6 times, resulting in a remainder of 28.
Use 6 as the next digit of our solution. 
Result so far: 8163.6363636
Deduct 462 from 490 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 14:
The number 77 fits into 280 3 times, leaving a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 8163.63636363
Subtract 231 from 280 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

After the division, we end up with 8163.63636363 and a remainder of 4.9e-08.