We look at the division of 19203409 by 638 
We're looking to find how many times 638 goes into 19203409.

Advancing to step 1:
When dividing 1 by 638, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 638

Let's proceed to step 2:
638 goes into 19 0 times with a remainder of 19.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Fetch the next digit (2) from the dividend, attach it to 19 and continue: 192 / 638

Step 3:
The number 638 fits into 192 0 times, leaving a remainder of 192.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 192 to get 192.
Grab the next digit (0) from the dividend, add it to 192, then carry on: 1920 / 638

Going ahead to step 4:
The number 638 fits into 1920 3 times, leaving a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 1914 away from 1920, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 638

Going ahead to step 5:
The number 638 fits into 63 0 times, leaving a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Deduct 0 from 63 and we're left with 63.
Take the next digit (4) from the dividend and append it to 63, then repeat: 634 / 638

On to step 6:
634 divided by 638 is 0 with a remainder of 634.
Put 0 as the next digit of the answer. 
Result so far: 300.0
Deduct 0 from 634 and we're left with 634.
Take the next digit (0) from the dividend and append it to 634, then repeat: 6340 / 638

On to step 7:
When dividing 6340 by 638, we get 9 with a remainder of 598.
Write down 9 as next digit of the result. 
Result so far: 3009.0
If we subtract 5742 from 6340, we get 598.
Fetch the next digit (9) from the dividend, attach it to 598 and continue: 5989 / 638

Moving on to step 8:
When dividing 5989 by 638, we get 9 with a remainder of 247.
Use 9 as the next digit of our solution. 
Result so far: 30099.0
Subtracting 5742 from 5989 leaves us with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

On to step 9:
638 can be fit into 2470 3 times, resulting in a remainder of 556.
Put 3 as the next digit of the answer. 
Result so far: 30099.3
If we subtract 1914 from 2470, we get 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

On to step 10:
If we divide 5560 by 638, we get 8 and a remainder of 456.
Use 8 as the next digit of our solution. 
Result so far: 30099.38
Subtract 5104 from 5560 to get 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Step 11:
638 goes into 4560 7 times with a remainder of 94.
Put 7 as the next digit of the answer. 
Result so far: 30099.387
The remainder is 94 after subtracting 4466 from 4560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Let's proceed to step 12:
940 divided by 638 is 1 with a remainder of 302.
Write down 1 as next digit of the result. 
Result so far: 30099.3871
The remainder is 302 after subtracting 638 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Advancing to step 13:
638 can be fit into 3020 4 times, resulting in a remainder of 468.
Write down 4 as next digit of the result. 
Result so far: 30099.38714
If we take 2552 away from 3020, we end up with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Advancing to step 14:
638 goes into 4680 7 times with a remainder of 214.
The number 7 becomes the next digit in our result. 
Result so far: 30099.387147
Subtracting 4466 from 4680 leaves us with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Moving on to step 15:
If we divide 2140 by 638, we get 3 and a remainder of 226.
The next digit of our result is 3. 
Result so far: 30099.3871473
Subtract 1914 from 2140 to get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Going ahead to step 16:
638 goes into 2260 3 times with a remainder of 346.
The number 3 becomes the next digit in our result. 
Result so far: 30099.38714733
Deduct 1914 from 2260 and we're left with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

The final outcome is 30099.38714733, with a leftover of 3.46e-07.