We look at the division of 639938 by 71 
Our goal is to divide 639938 by 71.

On to step 1:
71 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 71

Let's proceed to step 2:
When dividing 63 by 71, we get 0 with a remainder of 63.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Take the next digit (9) from the dividend and append it to 63, then repeat: 639 / 71

Let's proceed to step 3:
71 goes into 639 9 times with a remainder of 0.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtract 639 from 639 to get 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 71

Step 4:
The number 71 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 90.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 71

Let's proceed to step 5:
71 can be fit into 93 1 times, resulting in a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 901.0
Deduct 71 from 93 and we're left with 22.
Bring next digit (8) of the dividend behind the 22 and repeat the process: 228 / 71

Moving on to step 6:
228 divided by 71 is 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 9013.0
The remainder is 15 after subtracting 213 from 228.
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 7:
150 divided by 71 is 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 9013.2
Subtract 142 from 150 to get 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 8:
When dividing 80 by 71, we get 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 9013.21
If we take 71 away from 80, we end up with 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 9:
90 divided by 71 is 1 with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 9013.211
Subtract 71 from 90 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The final outcome is 9013.211, with a leftover of 0.0019.