19791568 divided by 638 
Our goal is to divide 19791568 by 638.

Let's proceed to step 1:
1 divided by 638 is 0 with 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.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 638

Let's proceed to step 2:
If we divide 19 by 638, we get 0 and a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (7) from the dividend, attach it to 19 and continue: 197 / 638

Let's proceed to step 3:
The number 638 fits into 197 0 times, leaving a remainder of 197.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 197 leaves us with 197.
Fetch the next digit (9) from the dividend, attach it to 197 and continue: 1979 / 638

Step 4:
When dividing 1979 by 638, we get 3 with a remainder of 65.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtracting 1914 from 1979 leaves us with 65.
Bring next digit (1) of the dividend behind the 65 and repeat the process: 651 / 638

Going ahead to step 5:
651 divided by 638 is 1 with a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 31.0
If we take 638 away from 651, we end up with 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 638

Going ahead to step 6:
If we divide 135 by 638, we get 0 and a remainder of 135.
Write down 0 as next digit of the result. 
Result so far: 310.0
Subtract 0 from 135 to get 135.
Append the next digit (6) from the dividend to 135 and continue with: 1356 / 638

Advancing to step 7:
If we divide 1356 by 638, we get 2 and a remainder of 80.
The next digit of our result is 2. 
Result so far: 3102.0
Subtracting 1276 from 1356 leaves us with 80.
Include the next digit (8) from the dividend after 80, then repeat: 808 / 638

Let's proceed to step 8:
When dividing 808 by 638, we get 1 with a remainder of 170.
The next digit of our result is 1. 
Result so far: 31021.0
Subtracting 638 from 808 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 9:
638 can be fit into 1700 2 times, resulting in a remainder of 424.
The next digit of our result is 2. 
Result so far: 31021.2
Subtracting 1276 from 1700 leaves us with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Let's proceed to step 10:
638 goes into 4240 6 times with a remainder of 412.
Put 6 as the next digit of the answer. 
Result so far: 31021.26
Subtracting 3828 from 4240 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Step 11:
638 goes into 4120 6 times with a remainder of 292.
The next digit of our result is 6. 
Result so far: 31021.266
Subtracting 3828 from 4120 leaves us with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

In conclusion, the division gives 31021.266 with a balance of 0.0292.