We look at the division of 15430875 by 629 
The aim is to understand the frequency of 629 in 15430875.

Let's proceed to step 1:
629 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 629

On to step 2:
629 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Fetch the next digit (4) from the dividend, attach it to 15 and continue: 154 / 629

Let's proceed to step 3:
629 goes into 154 0 times with a remainder of 154.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 154 after subtracting 0 from 154.
Append the next digit (3) from the dividend to 154 and continue with: 1543 / 629

Let's proceed to step 4:
1543 divided by 629 is 2 with a remainder of 285.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 285 after subtracting 1258 from 1543.
Include the next digit (0) from the dividend after 285, then repeat: 2850 / 629

Advancing to step 5:
629 goes into 2850 4 times with a remainder of 334.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtract 2516 from 2850 to get 334.
Take the next digit (8) from the dividend and append it to 334, then repeat: 3348 / 629

Moving on to step 6:
When dividing 3348 by 629, we get 5 with a remainder of 203.
Use 5 as the next digit of our solution. 
Result so far: 245.0
If we take 3145 away from 3348, we end up with 203.
Grab the next digit (7) from the dividend, add it to 203, then carry on: 2037 / 629

Advancing to step 7:
629 goes into 2037 3 times with a remainder of 150.
Write down 3 as next digit of the result. 
Result so far: 2453.0
Deduct 1887 from 2037 and we're left with 150.
Fetch the next digit (5) from the dividend, attach it to 150 and continue: 1505 / 629

Going ahead to step 8:
When dividing 1505 by 629, we get 2 with a remainder of 247.
The number 2 becomes the next digit in our result. 
Result so far: 24532.0
If we take 1258 away from 1505, we end up with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

On to step 9:
629 can be fit into 2470 3 times, resulting in a remainder of 583.
Record the quotient 3 as the next digit in the result. 
Result so far: 24532.3
If we subtract 1887 from 2470, we get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Step 10:
5830 divided by 629 is 9 with a remainder of 169.
Write down 9 as next digit of the result. 
Result so far: 24532.39
Deduct 5661 from 5830 and we're left with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

Let's proceed to step 11:
1690 divided by 629 is 2 with a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 24532.392
The remainder is 432 after subtracting 1258 from 1690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Step 12:
If we divide 4320 by 629, we get 6 and a remainder of 546.
The next digit of our result is 6. 
Result so far: 24532.3926
Deduct 3774 from 4320 and we're left with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

On to step 13:
629 goes into 5460 8 times with a remainder of 428.
Use 8 as the next digit of our solution. 
Result so far: 24532.39268
Subtracting 5032 from 5460 leaves us with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Step 14:
The number 629 fits into 4280 6 times, leaving a remainder of 506.
The number 6 becomes the next digit in our result. 
Result so far: 24532.392686
If we take 3774 away from 4280, we end up with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Advancing to step 15:
629 can be fit into 5060 8 times, resulting in a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 24532.3926868
Subtract 5032 from 5060 to get 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 16:
When dividing 280 by 629, we get 0 with a remainder of 280.
Record the quotient 0 as the next digit in the result. 
Result so far: 24532.3926868
If we subtract 0 from 280, we get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The final outcome is 24532.3926868, with a leftover of 2.8e-07.