We're dividing 28533788 by 638 
The aim is to understand the frequency of 638 in 28533788.

Let's proceed to step 1:
If we divide 2 by 638, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 638

Moving on to step 2:
28 divided by 638 is 0 with a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Include the next digit (5) from the dividend after 28, then repeat: 285 / 638

Advancing to step 3:
638 can be fit into 285 0 times, resulting in a remainder of 285.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 285 leaves us with 285.
Include the next digit (3) from the dividend after 285, then repeat: 2853 / 638

Going ahead to step 4:
If we divide 2853 by 638, we get 4 and a remainder of 301.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 2552 from 2853 and we're left with 301.
Fetch the next digit (3) from the dividend, attach it to 301 and continue: 3013 / 638

Going ahead to step 5:
3013 divided by 638 is 4 with a remainder of 461.
Use 4 as the next digit of our solution. 
Result so far: 44.0
If we take 2552 away from 3013, we end up with 461.
Include the next digit (7) from the dividend after 461, then repeat: 4617 / 638

Step 6:
When dividing 4617 by 638, we get 7 with a remainder of 151.
Use 7 as the next digit of our solution. 
Result so far: 447.0
Deduct 4466 from 4617 and we're left with 151.
Bring next digit (8) of the dividend behind the 151 and repeat the process: 1518 / 638

Going ahead to step 7:
If we divide 1518 by 638, we get 2 and a remainder of 242.
Use 2 as the next digit of our solution. 
Result so far: 4472.0
Subtract 1276 from 1518 to get 242.
Grab the next digit (8) from the dividend, add it to 242, then carry on: 2428 / 638

On to step 8:
When dividing 2428 by 638, we get 3 with a remainder of 514.
Write down 3 as next digit of the result. 
Result so far: 44723.0
Subtracting 1914 from 2428 leaves us with 514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5140, and continue the process.

Let's proceed to step 9:
When dividing 5140 by 638, we get 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 44723.8
The remainder is 36 after subtracting 5104 from 5140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 10:
638 goes into 360 0 times with a remainder of 360.
Write down 0 as next digit of the result. 
Result so far: 44723.8
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 11:
The number 638 fits into 3600 5 times, leaving a remainder of 410.
The number 5 becomes the next digit in our result. 
Result so far: 44723.805
The remainder is 410 after subtracting 3190 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Moving on to step 12:
638 goes into 4100 6 times with a remainder of 272.
Write down 6 as next digit of the result. 
Result so far: 44723.8056
The remainder is 272 after subtracting 3828 from 4100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Let's proceed to step 13:
When dividing 2720 by 638, we get 4 with a remainder of 168.
Use 4 as the next digit of our solution. 
Result so far: 44723.80564
Subtract 2552 from 2720 to get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 14:
If we divide 1680 by 638, we get 2 and a remainder of 404.
Put 2 as the next digit of the answer. 
Result so far: 44723.805642
If we take 1276 away from 1680, we end up with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Step 15:
4040 divided by 638 is 6 with a remainder of 212.
The number 6 becomes the next digit in our result. 
Result so far: 44723.8056426
Deduct 3828 from 4040 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 16:
The number 638 fits into 2120 3 times, leaving a remainder of 206.
Use 3 as the next digit of our solution. 
Result so far: 44723.80564263
If we take 1914 away from 2120, we end up with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

In conclusion, the division gives 44723.80564263 with a balance of 2.06e-07.