4002935 divided by 639 
Our goal is to divide 4002935 by 639.

Moving on to step 1:
4 divided by 639 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 639

Moving on to step 2:
The number 639 fits into 40 0 times, leaving a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 40 leaves us with 40.
Fetch the next digit (0) from the dividend, attach it to 40 and continue: 400 / 639

Going ahead to step 3:
When dividing 400 by 639, we get 0 with a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 400, we get 400.
Include the next digit (2) from the dividend after 400, then repeat: 4002 / 639

Let's proceed to step 4:
If we divide 4002 by 639, we get 6 and a remainder of 168.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 168 after subtracting 3834 from 4002.
Take the next digit (9) from the dividend and append it to 168, then repeat: 1689 / 639

On to step 5:
639 goes into 1689 2 times with a remainder of 411.
Write down 2 as next digit of the result. 
Result so far: 62.0
Subtracting 1278 from 1689 leaves us with 411.
Append the next digit (3) from the dividend to 411 and continue with: 4113 / 639

Going ahead to step 6:
639 can be fit into 4113 6 times, resulting in a remainder of 279.
Record the quotient 6 as the next digit in the result. 
Result so far: 626.0
If we take 3834 away from 4113, we end up with 279.
Fetch the next digit (5) from the dividend, attach it to 279 and continue: 2795 / 639

Going ahead to step 7:
The number 639 fits into 2795 4 times, leaving a remainder of 239.
The number 4 becomes the next digit in our result. 
Result so far: 6264.0
If we subtract 2556 from 2795, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

On to step 8:
The number 639 fits into 2390 3 times, leaving a remainder of 473.
Record the quotient 3 as the next digit in the result. 
Result so far: 6264.3
If we take 1917 away from 2390, we end up with 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

On to step 9:
When dividing 4730 by 639, we get 7 with a remainder of 257.
Write down 7 as next digit of the result. 
Result so far: 6264.37
Subtracting 4473 from 4730 leaves us with 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Going ahead to step 10:
639 goes into 2570 4 times with a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 6264.374
Deduct 2556 from 2570 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 11:
639 can be fit into 140 0 times, resulting in a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 6264.374
Deduct 0 from 140 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Let's proceed to step 12:
639 goes into 1400 2 times with a remainder of 122.
The number 2 becomes the next digit in our result. 
Result so far: 6264.37402
The remainder is 122 after subtracting 1278 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 13:
When dividing 1220 by 639, we get 1 with a remainder of 581.
The number 1 becomes the next digit in our result. 
Result so far: 6264.374021
Subtract 639 from 1220 to get 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

Let's proceed to step 14:
The number 639 fits into 5810 9 times, leaving a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 6264.3740219
If we take 5751 away from 5810, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 15:
When dividing 590 by 639, we get 0 with a remainder of 590.
Record the quotient 0 as the next digit in the result. 
Result so far: 6264.3740219
The remainder is 590 after subtracting 0 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

In conclusion, the division gives 6264.3740219 with a balance of 5.9e-07.