We're dividing 25149599 by 637 
The aim is to understand the frequency of 637 in 25149599.

On to step 1:
637 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 637

On to step 2:
If we divide 25 by 637, we get 0 and a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 637

Moving on to step 3:
251 divided by 637 is 0 with a remainder of 251.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 251 to get 251.
Append the next digit (4) from the dividend to 251 and continue with: 2514 / 637

Let's proceed to step 4:
If we divide 2514 by 637, we get 3 and a remainder of 603.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 1911 from 2514, we get 603.
Bring next digit (9) of the dividend behind the 603 and repeat the process: 6039 / 637

Moving on to step 5:
If we divide 6039 by 637, we get 9 and a remainder of 306.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
The remainder is 306 after subtracting 5733 from 6039.
Take the next digit (5) from the dividend and append it to 306, then repeat: 3065 / 637

Let's proceed to step 6:
3065 divided by 637 is 4 with a remainder of 517.
Use 4 as the next digit of our solution. 
Result so far: 394.0
If we take 2548 away from 3065, we end up with 517.
Bring next digit (9) of the dividend behind the 517 and repeat the process: 5179 / 637

Moving on to step 7:
5179 divided by 637 is 8 with a remainder of 83.
The next digit of our result is 8. 
Result so far: 3948.0
If we subtract 5096 from 5179, we get 83.
Append the next digit (9) from the dividend to 83 and continue with: 839 / 637

Moving on to step 8:
The number 637 fits into 839 1 times, leaving a remainder of 202.
The number 1 becomes the next digit in our result. 
Result so far: 39481.0
If we subtract 637 from 839, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Let's proceed to step 9:
2020 divided by 637 is 3 with a remainder of 109.
Record the quotient 3 as the next digit in the result. 
Result so far: 39481.3
Subtracting 1911 from 2020 leaves us with 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Going ahead to step 10:
637 can be fit into 1090 1 times, resulting in a remainder of 453.
The next digit of our result is 1. 
Result so far: 39481.31
Subtract 637 from 1090 to get 453.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4530, and continue the process.

On to step 11:
4530 divided by 637 is 7 with a remainder of 71.
Record the quotient 7 as the next digit in the result. 
Result so far: 39481.317
Subtract 4459 from 4530 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 12:
710 divided by 637 is 1 with a remainder of 73.
The number 1 becomes the next digit in our result. 
Result so far: 39481.3171
If we subtract 637 from 710, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 13:
If we divide 730 by 637, we get 1 and a remainder of 93.
The number 1 becomes the next digit in our result. 
Result so far: 39481.31711
The remainder is 93 after subtracting 637 from 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

After the division, we end up with 39481.31711 and a remainder of 9.3e-05.