640934 ÷ 39 
Our goal is to divide 640934 by 39.

Moving on to step 1:
The number 39 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 39

On to step 2:
39 goes into 64 1 times with a remainder of 25.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 39 from 64 and we're left with 25.
Append the next digit (0) from the dividend to 25 and continue with: 250 / 39

Let's proceed to step 3:
39 can be fit into 250 6 times, resulting in a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 16.0
Deduct 234 from 250 and we're left with 16.
Include the next digit (9) from the dividend after 16, then repeat: 169 / 39

Moving on to step 4:
39 can be fit into 169 4 times, resulting in a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 164.0
Subtracting 156 from 169 leaves us with 13.
Append the next digit (3) from the dividend to 13 and continue with: 133 / 39

Advancing to step 5:
If we divide 133 by 39, we get 3 and a remainder of 16.
Record the quotient 3 as the next digit in the result. 
Result so far: 1643.0
Subtract 117 from 133 to get 16.
Take the next digit (4) from the dividend and append it to 16, then repeat: 164 / 39

On to step 6:
39 goes into 164 4 times with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 16434.0
Deduct 156 from 164 and we're left 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.

Advancing to step 7:
If we divide 80 by 39, we get 2 and a remainder of 2.
The next digit of our result is 2. 
Result so far: 16434.2
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
39 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 16434.2
Subtracting 0 from 20 leaves us 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.

Step 9:
If we divide 200 by 39, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 16434.205
If we subtract 195 from 200, we get 5.
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 10:
39 can be fit into 50 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 16434.2051
If we take 39 away from 50, 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.

Moving on to step 11:
The number 39 fits into 110 2 times, leaving a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 16434.20512
Deduct 78 from 110 and we're left with 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 12:
The number 39 fits into 320 8 times, leaving a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 16434.205128
Deduct 312 from 320 and we're left 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.

Advancing to step 13:
When dividing 80 by 39, we get 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 16434.2051282
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
39 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 16434.2051282
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Our division results in 16434.2051282 with a remaining 2e-08.