We look at the division of 13012663 by 629 
The aim is to understand the frequency of 629 in 13012663.

Step 1:
The number 629 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 629

Step 2:
The number 629 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 13, we end up with 13.
Bring next digit (0) of the dividend behind the 13 and repeat the process: 130 / 629

Going ahead to step 3:
When dividing 130 by 629, we get 0 with a remainder of 130.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 130, we end up with 130.
Append the next digit (1) from the dividend to 130 and continue with: 1301 / 629

Moving on to step 4:
The number 629 fits into 1301 2 times, leaving a remainder of 43.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1258 from 1301 leaves us with 43.
Include the next digit (2) from the dividend after 43, then repeat: 432 / 629

Let's proceed to step 5:
629 goes into 432 0 times with a remainder of 432.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtract 0 from 432 to get 432.
Grab the next digit (6) from the dividend, add it to 432, then carry on: 4326 / 629

On to step 6:
629 goes into 4326 6 times with a remainder of 552.
The next digit of our result is 6. 
Result so far: 206.0
If we subtract 3774 from 4326, we get 552.
Append the next digit (6) from the dividend to 552 and continue with: 5526 / 629

Moving on to step 7:
629 goes into 5526 8 times with a remainder of 494.
Use 8 as the next digit of our solution. 
Result so far: 2068.0
If we subtract 5032 from 5526, we get 494.
Fetch the next digit (3) from the dividend, attach it to 494 and continue: 4943 / 629

Step 8:
The number 629 fits into 4943 7 times, leaving a remainder of 540.
The next digit of our result is 7. 
Result so far: 20687.0
The remainder is 540 after subtracting 4403 from 4943.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Going ahead to step 9:
The number 629 fits into 5400 8 times, leaving a remainder of 368.
The next digit of our result is 8. 
Result so far: 20687.8
Subtracting 5032 from 5400 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.

Step 10:
629 goes into 3680 5 times with a remainder of 535.
Put 5 as the next digit of the answer. 
Result so far: 20687.85
If we take 3145 away from 3680, 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.

Step 11:
629 can be fit into 5350 8 times, resulting in a remainder of 318.
The next digit of our result is 8. 
Result so far: 20687.858
Subtract 5032 from 5350 to get 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

On to step 12:
If we divide 3180 by 629, we get 5 and a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 20687.8585
If we take 3145 away from 3180, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 13:
If we divide 350 by 629, we get 0 and a remainder of 350.
Record the quotient 0 as the next digit in the result. 
Result so far: 20687.8585
If we subtract 0 from 350, we get 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 14:
If we divide 3500 by 629, we get 5 and a remainder of 355.
The number 5 becomes the next digit in our result. 
Result so far: 20687.858505
If we take 3145 away from 3500, we end up with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Going ahead to step 15:
629 goes into 3550 5 times with a remainder of 405.
Write down 5 as next digit of the result. 
Result so far: 20687.8585055
Subtract 3145 from 3550 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

The final result is 20687.8585055 with a remainder of 4.05e-06.