We're dividing 17159692 by 638 
The aim is to understand the frequency of 638 in 17159692.

On to step 1:
638 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 638

Advancing to step 2:
When dividing 17 by 638, we get 0 with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 638

Going ahead to step 3:
638 can be fit into 171 0 times, resulting in a remainder of 171.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 171 after subtracting 0 from 171.
Include the next digit (5) from the dividend after 171, then repeat: 1715 / 638

Going ahead to step 4:
638 can be fit into 1715 2 times, resulting in a remainder of 439.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 1276 away from 1715, we end up with 439.
Grab the next digit (9) from the dividend, add it to 439, then carry on: 4399 / 638

Going ahead to step 5:
638 goes into 4399 6 times with a remainder of 571.
Put 6 as the next digit of the answer. 
Result so far: 26.0
Deduct 3828 from 4399 and we're left with 571.
Fetch the next digit (6) from the dividend, attach it to 571 and continue: 5716 / 638

Step 6:
If we divide 5716 by 638, we get 8 and a remainder of 612.
Record the quotient 8 as the next digit in the result. 
Result so far: 268.0
If we subtract 5104 from 5716, we get 612.
Append the next digit (9) from the dividend to 612 and continue with: 6129 / 638

Let's proceed to step 7:
638 can be fit into 6129 9 times, resulting in a remainder of 387.
Put 9 as the next digit of the answer. 
Result so far: 2689.0
Subtracting 5742 from 6129 leaves us with 387.
Bring next digit (2) of the dividend behind the 387 and repeat the process: 3872 / 638

Step 8:
The number 638 fits into 3872 6 times, leaving a remainder of 44.
The next digit of our result is 6. 
Result so far: 26896.0
If we subtract 3828 from 3872, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 9:
If we divide 440 by 638, we get 0 and a remainder of 440.
Write down 0 as next digit of the result. 
Result so far: 26896.0
Subtract 0 from 440 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Let's proceed to step 10:
The number 638 fits into 4400 6 times, leaving a remainder of 572.
Write down 6 as next digit of the result. 
Result so far: 26896.06
The remainder is 572 after subtracting 3828 from 4400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

Let's proceed to step 11:
When dividing 5720 by 638, we get 8 with a remainder of 616.
The number 8 becomes the next digit in our result. 
Result so far: 26896.068
The remainder is 616 after subtracting 5104 from 5720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 12:
638 goes into 6160 9 times with a remainder of 418.
Record the quotient 9 as the next digit in the result. 
Result so far: 26896.0689
If we take 5742 away from 6160, we end up with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Let's proceed to step 13:
The number 638 fits into 4180 6 times, leaving a remainder of 352.
Put 6 as the next digit of the answer. 
Result so far: 26896.06896
If we subtract 3828 from 4180, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Let's proceed to step 14:
638 goes into 3520 5 times with a remainder of 330.
Write down 5 as next digit of the result. 
Result so far: 26896.068965
If we subtract 3190 from 3520, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Advancing to step 15:
3300 divided by 638 is 5 with a remainder of 110.
Put 5 as the next digit of the answer. 
Result so far: 26896.0689655
The remainder is 110 after subtracting 3190 from 3300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

The final outcome is 26896.0689655, with a leftover of 1.1e-06.