We look at the division of 76991649 by 626 
The aim is to understand the frequency of 626 in 76991649.

Advancing to step 1:
7 divided by 626 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 626

Advancing to step 2:
The number 626 fits into 76 0 times, leaving a remainder of 76.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 76 leaves us with 76.
Bring next digit (9) of the dividend behind the 76 and repeat the process: 769 / 626

Step 3:
When dividing 769 by 626, we get 1 with a remainder of 143.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 626 from 769 leaves us with 143.
Bring next digit (9) of the dividend behind the 143 and repeat the process: 1439 / 626

Advancing to step 4:
1439 divided by 626 is 2 with a remainder of 187.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1252 away from 1439, we end up with 187.
Take the next digit (1) from the dividend and append it to 187, then repeat: 1871 / 626

Moving on to step 5:
If we divide 1871 by 626, we get 2 and a remainder of 619.
Write down 2 as next digit of the result. 
Result so far: 122.0
If we take 1252 away from 1871, we end up with 619.
Include the next digit (6) from the dividend after 619, then repeat: 6196 / 626

Moving on to step 6:
626 goes into 6196 9 times with a remainder of 562.
The number 9 becomes the next digit in our result. 
Result so far: 1229.0
If we take 5634 away from 6196, we end up with 562.
Bring next digit (4) of the dividend behind the 562 and repeat the process: 5624 / 626

Advancing to step 7:
When dividing 5624 by 626, we get 8 with a remainder of 616.
Use 8 as the next digit of our solution. 
Result so far: 12298.0
If we subtract 5008 from 5624, we get 616.
Append the next digit (9) from the dividend to 616 and continue with: 6169 / 626

Let's proceed to step 8:
When dividing 6169 by 626, we get 9 with a remainder of 535.
Write down 9 as next digit of the result. 
Result so far: 122989.0
If we take 5634 away from 6169, we end up with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

On to step 9:
If we divide 5350 by 626, we get 8 and a remainder of 342.
Write down 8 as next digit of the result. 
Result so far: 122989.8
Subtracting 5008 from 5350 leaves us with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 10:
626 can be fit into 3420 5 times, resulting in a remainder of 290.
Use 5 as the next digit of our solution. 
Result so far: 122989.85
The remainder is 290 after subtracting 3130 from 3420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 11:
If we divide 2900 by 626, we get 4 and a remainder of 396.
Use 4 as the next digit of our solution. 
Result so far: 122989.854
The remainder is 396 after subtracting 2504 from 2900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 12:
626 goes into 3960 6 times with a remainder of 204.
Put 6 as the next digit of the answer. 
Result so far: 122989.8546
Deduct 3756 from 3960 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

On to step 13:
If we divide 2040 by 626, we get 3 and a remainder of 162.
The next digit of our result is 3. 
Result so far: 122989.85463
Subtract 1878 from 2040 to get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Advancing to step 14:
1620 divided by 626 is 2 with a remainder of 368.
Record the quotient 2 as the next digit in the result. 
Result so far: 122989.854632
Subtracting 1252 from 1620 leaves us with 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Moving on to step 15:
The number 626 fits into 3680 5 times, leaving a remainder of 550.
Put 5 as the next digit of the answer. 
Result so far: 122989.8546325
Deduct 3130 from 3680 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Going ahead to step 16:
If we divide 5500 by 626, we get 8 and a remainder of 492.
Use 8 as the next digit of our solution. 
Result so far: 122989.85463258
If we take 5008 away from 5500, we end up with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

The final result is 122989.85463258 with a remainder of 4.92e-07.