We look at the division of 16146567 by 638 
The aim is to understand the frequency of 638 in 16146567.

Moving on to step 1:
638 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 638

Step 2:
638 goes into 16 0 times with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Include the next digit (1) from the dividend after 16, then repeat: 161 / 638

On to step 3:
If we divide 161 by 638, we get 0 and a remainder of 161.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 161 and we're left with 161.
Grab the next digit (4) from the dividend, add it to 161, then carry on: 1614 / 638

Advancing to step 4:
When dividing 1614 by 638, we get 2 with a remainder of 338.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 1276 from 1614, we get 338.
Grab the next digit (6) from the dividend, add it to 338, then carry on: 3386 / 638

On to step 5:
638 can be fit into 3386 5 times, resulting in a remainder of 196.
The next digit of our result is 5. 
Result so far: 25.0
If we take 3190 away from 3386, we end up with 196.
Take the next digit (5) from the dividend and append it to 196, then repeat: 1965 / 638

On to step 6:
638 can be fit into 1965 3 times, resulting in a remainder of 51.
Record the quotient 3 as the next digit in the result. 
Result so far: 253.0
Deduct 1914 from 1965 and we're left with 51.
Take the next digit (6) from the dividend and append it to 51, then repeat: 516 / 638

On to step 7:
638 can be fit into 516 0 times, resulting in a remainder of 516.
Write down 0 as next digit of the result. 
Result so far: 2530.0
If we take 0 away from 516, we end up with 516.
Include the next digit (7) from the dividend after 516, then repeat: 5167 / 638

Going ahead to step 8:
638 goes into 5167 8 times with a remainder of 63.
The next digit of our result is 8. 
Result so far: 25308.0
Deduct 5104 from 5167 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 9:
When dividing 630 by 638, we get 0 with a remainder of 630.
Use 0 as the next digit of our solution. 
Result so far: 25308.0
If we take 0 away from 630, we end up with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Let's proceed to step 10:
The number 638 fits into 6300 9 times, leaving a remainder of 558.
The next digit of our result is 9. 
Result so far: 25308.09
Subtracting 5742 from 6300 leaves us with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Going ahead to step 11:
638 can be fit into 5580 8 times, resulting in a remainder of 476.
Write down 8 as next digit of the result. 
Result so far: 25308.098
The remainder is 476 after subtracting 5104 from 5580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Going ahead to step 12:
When dividing 4760 by 638, we get 7 with a remainder of 294.
The number 7 becomes the next digit in our result. 
Result so far: 25308.0987
Subtracting 4466 from 4760 leaves us with 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Advancing to step 13:
The number 638 fits into 2940 4 times, leaving a remainder of 388.
The next digit of our result is 4. 
Result so far: 25308.09874
The remainder is 388 after subtracting 2552 from 2940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Going ahead to step 14:
638 can be fit into 3880 6 times, resulting in a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 25308.098746
Subtracting 3828 from 3880 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 15:
When dividing 520 by 638, we get 0 with a remainder of 520.
The next digit of our result is 0. 
Result so far: 25308.098746
The remainder is 520 after subtracting 0 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 16:
638 can be fit into 5200 8 times, resulting in a remainder of 96.
The number 8 becomes the next digit in our result. 
Result so far: 25308.09874608
If we subtract 5104 from 5200, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final result is 25308.09874608 with a remainder of 9.6e-08.