We look at the division of 16871224 by 638 
We want to figure out the number of times 16871224 can be divided by 638.

Step 1:
638 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 638

Going ahead to step 2:
If we divide 16 by 638, we get 0 and 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.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 638

On to step 3:
If we divide 168 by 638, we get 0 and a remainder of 168.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 168, we end up with 168.
Grab the next digit (7) from the dividend, add it to 168, then carry on: 1687 / 638

Going ahead to step 4:
638 goes into 1687 2 times with a remainder of 411.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 1276 from 1687, we get 411.
Append the next digit (1) from the dividend to 411 and continue with: 4111 / 638

Step 5:
The number 638 fits into 4111 6 times, leaving a remainder of 283.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
If we take 3828 away from 4111, we end up with 283.
Append the next digit (2) from the dividend to 283 and continue with: 2832 / 638

Moving on to step 6:
638 can be fit into 2832 4 times, resulting in a remainder of 280.
The number 4 becomes the next digit in our result. 
Result so far: 264.0
Subtract 2552 from 2832 to get 280.
Append the next digit (2) from the dividend to 280 and continue with: 2802 / 638

Advancing to step 7:
The number 638 fits into 2802 4 times, leaving a remainder of 250.
Write down 4 as next digit of the result. 
Result so far: 2644.0
Deduct 2552 from 2802 and we're left with 250.
Take the next digit (4) from the dividend and append it to 250, then repeat: 2504 / 638

Let's proceed to step 8:
If we divide 2504 by 638, we get 3 and a remainder of 590.
Use 3 as the next digit of our solution. 
Result so far: 26443.0
Subtracting 1914 from 2504 leaves us with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

On to step 9:
638 can be fit into 5900 9 times, resulting in a remainder of 158.
Write down 9 as next digit of the result. 
Result so far: 26443.9
If we take 5742 away from 5900, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 10:
1580 divided by 638 is 2 with a remainder of 304.
The next digit of our result is 2. 
Result so far: 26443.92
If we take 1276 away from 1580, we end up with 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Going ahead to step 11:
638 can be fit into 3040 4 times, resulting in a remainder of 488.
Record the quotient 4 as the next digit in the result. 
Result so far: 26443.924
Deduct 2552 from 3040 and we're left with 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 12:
When dividing 4880 by 638, we get 7 with a remainder of 414.
Write down 7 as next digit of the result. 
Result so far: 26443.9247
The remainder is 414 after subtracting 4466 from 4880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Going ahead to step 13:
If we divide 4140 by 638, we get 6 and a remainder of 312.
Record the quotient 6 as the next digit in the result. 
Result so far: 26443.92476
Subtract 3828 from 4140 to get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Advancing to step 14:
638 can be fit into 3120 4 times, resulting in a remainder of 568.
Write down 4 as next digit of the result. 
Result so far: 26443.924764
Deduct 2552 from 3120 and we're left with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Going ahead to step 15:
The number 638 fits into 5680 8 times, leaving a remainder of 576.
Write down 8 as next digit of the result. 
Result so far: 26443.9247648
The remainder is 576 after subtracting 5104 from 5680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Advancing to step 16:
638 goes into 5760 9 times with a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 26443.92476489
Deduct 5742 from 5760 and we're left 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.

The final outcome is 26443.92476489, with a leftover of 1.8e-08.