639904 divided by 19 
Our goal is to divide 639904 by 19.

Going ahead to step 1:
If we divide 6 by 19, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 19

Step 2:
The number 19 fits into 63 3 times, leaving a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 6 after subtracting 57 from 63.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 19

Step 3:
69 divided by 19 is 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 33.0
The remainder is 12 after subtracting 57 from 69.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 19

Moving on to step 4:
129 divided by 19 is 6 with a remainder of 15.
Put 6 as the next digit of the answer. 
Result so far: 336.0
The remainder is 15 after subtracting 114 from 129.
Include the next digit (0) from the dividend after 15, then repeat: 150 / 19

Step 5:
The number 19 fits into 150 7 times, leaving a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 3367.0
The remainder is 17 after subtracting 133 from 150.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 19

Step 6:
19 can be fit into 174 9 times, resulting in a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 33679.0
Subtracting 171 from 174 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
The number 19 fits into 30 1 times, leaving a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 33679.1
Subtracting 19 from 30 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 8:
19 can be fit into 110 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 33679.15
Subtract 95 from 110 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
19 goes into 150 7 times with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 33679.157
If we subtract 133 from 150, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 10:
If we divide 170 by 19, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 33679.1578
Deduct 152 from 170 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.

Advancing to step 11:
19 can be fit into 180 9 times, resulting in a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 33679.15789
Subtract 171 from 180 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 12:
19 goes into 90 4 times with a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 33679.157894
If we subtract 76 from 90, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 13:
140 divided by 19 is 7 with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 33679.1578947
Deduct 133 from 140 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 14:
19 goes into 70 3 times with a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 33679.15789473
Subtract 57 from 70 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 33679.15789473 and a remainder of 1.3e-08.