We look at the division of 646007 by 39 
We want to divide 646007 by 39.

Advancing to step 1:
When dividing 6 by 39, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 39

On to step 2:
The number 39 fits into 64 1 times, leaving a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 39 from 64 to get 25.
Include the next digit (6) from the dividend after 25, then repeat: 256 / 39

Going ahead to step 3:
The number 39 fits into 256 6 times, leaving a remainder of 22.
The next digit of our result is 6. 
Result so far: 16.0
The remainder is 22 after subtracting 234 from 256.
Fetch the next digit (0) from the dividend, attach it to 22 and continue: 220 / 39

On to step 4:
When dividing 220 by 39, we get 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 165.0
If we subtract 195 from 220, we get 25.
Append the next digit (0) from the dividend to 25 and continue with: 250 / 39

On to step 5:
The number 39 fits into 250 6 times, leaving a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 1656.0
Subtracting 234 from 250 leaves us with 16.
Include the next digit (7) from the dividend after 16, then repeat: 167 / 39

Going ahead to step 6:
39 can be fit into 167 4 times, resulting in a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 16564.0
If we take 156 away from 167, we end up 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 7:
39 goes into 110 2 times with a remainder of 32.
Use 2 as the next digit of our solution. 
Result so far: 16564.2
Subtract 78 from 110 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 8:
39 goes into 320 8 times with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 16564.28
Subtracting 312 from 320 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
39 can be fit into 80 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 16564.282
Deduct 78 from 80 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
If we divide 20 by 39, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 16564.282
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 11:
When dividing 200 by 39, we get 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 16564.28205
The remainder is 5 after subtracting 195 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 12:
50 divided by 39 is 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 16564.282051
Deduct 39 from 50 and we're left 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.

Advancing to step 13:
39 can be fit into 110 2 times, resulting in a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 16564.2820512
Subtract 78 from 110 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 14:
39 can be fit into 320 8 times, resulting in a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 16564.28205128
If we take 312 away from 320, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 16564.28205128 with a remainder of 8e-09.