We look at the division of 25631677 by 38 
The aim is to understand the frequency of 38 in 25631677.

Let's proceed to step 1:
2 divided by 38 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 38

Let's proceed to step 2:
38 can be fit into 25 0 times, resulting in a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Take the next digit (6) from the dividend and append it to 25, then repeat: 256 / 38

Step 3:
38 can be fit into 256 6 times, resulting in a remainder of 28.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 228 from 256 leaves us with 28.
Include the next digit (3) from the dividend after 28, then repeat: 283 / 38

Going ahead to step 4:
If we divide 283 by 38, we get 7 and a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 67.0
Deduct 266 from 283 and we're left with 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 38

Let's proceed to step 5:
38 goes into 171 4 times with a remainder of 19.
Use 4 as the next digit of our solution. 
Result so far: 674.0
Subtract 152 from 171 to get 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 38

Advancing to step 6:
38 goes into 196 5 times with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 6745.0
The remainder is 6 after subtracting 190 from 196.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 38

Let's proceed to step 7:
67 divided by 38 is 1 with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 67451.0
The remainder is 29 after subtracting 38 from 67.
Fetch the next digit (7) from the dividend, attach it to 29 and continue: 297 / 38

Let's proceed to step 8:
When dividing 297 by 38, we get 7 with a remainder of 31.
Put 7 as the next digit of the answer. 
Result so far: 674517.0
Deduct 266 from 297 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 9:
If we divide 310 by 38, we get 8 and a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 674517.8
Deduct 304 from 310 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
38 can be fit into 60 1 times, resulting in a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 674517.81
Subtracting 38 from 60 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
220 divided by 38 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 674517.815
The remainder is 30 after subtracting 190 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 12:
38 goes into 300 7 times with a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 674517.8157
Subtract 266 from 300 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 13:
The number 38 fits into 340 8 times, leaving a remainder of 36.
The next digit of our result is 8. 
Result so far: 674517.81578
Subtract 304 from 340 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 14:
If we divide 360 by 38, we get 9 and a remainder of 18.
Write down 9 as next digit of the result. 
Result so far: 674517.815789
If we take 342 away from 360, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 15:
When dividing 180 by 38, we get 4 with a remainder of 28.
The next digit of our result is 4. 
Result so far: 674517.8157894
If we subtract 152 from 180, we 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.

Moving on to step 16:
The number 38 fits into 280 7 times, leaving a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 674517.81578947
If we subtract 266 from 280, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 674517.81578947 and a remainder of 1.4e-08.