639879 divided by 71 
We want to divide 639879 by 71.

Moving 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
Subtract 0 from 6 to get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 71

Advancing to step 2:
63 divided by 71 is 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 71

Step 3:
The number 71 fits into 639 9 times, leaving a remainder of 0.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 639 from 639, we get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 71

Moving on to step 4:
If we divide 8 by 71, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 90.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 71

Moving on to step 5:
71 goes into 87 1 times with a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 901.0
Deduct 71 from 87 and we're left with 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 71

Advancing to step 6:
When dividing 169 by 71, we get 2 with a remainder of 27.
The number 2 becomes the next digit in our result. 
Result so far: 9012.0
If we subtract 142 from 169, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 7:
71 goes into 270 3 times with a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 9012.3
If we subtract 213 from 270, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 8:
71 goes into 570 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 9012.38
The remainder is 2 after subtracting 568 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 9:
71 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 9012.38
If we subtract 0 from 20, we 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.

On to step 10:
When dividing 200 by 71, we get 2 with a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 9012.3802
If we take 142 away from 200, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
The number 71 fits into 580 8 times, leaving a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 9012.38028
If we subtract 568 from 580, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
When dividing 120 by 71, we get 1 with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 9012.380281
Deduct 71 from 120 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 13:
71 goes into 490 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 9012.3802816
Subtract 426 from 490 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 14:
71 goes into 640 9 times with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 9012.38028169
The remainder is 1 after subtracting 639 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 9012.38028169 with a balance of 1e-09.