We're dividing 15886271 by 639 
Let's see how many times 639 fits into 15886271.

Moving on to step 1:
When dividing 1 by 639, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 639

Let's proceed to step 2:
If we divide 15 by 639, we get 0 and a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 639

Moving on to step 3:
639 goes into 158 0 times with a remainder of 158.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Include the next digit (8) from the dividend after 158, then repeat: 1588 / 639

On to step 4:
The number 639 fits into 1588 2 times, leaving a remainder of 310.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 1278 from 1588 leaves us with 310.
Take the next digit (6) from the dividend and append it to 310, then repeat: 3106 / 639

Going ahead to step 5:
If we divide 3106 by 639, we get 4 and a remainder of 550.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we take 2556 away from 3106, we end up with 550.
Take the next digit (2) from the dividend and append it to 550, then repeat: 5502 / 639

Let's proceed to step 6:
639 goes into 5502 8 times with a remainder of 390.
The number 8 becomes the next digit in our result. 
Result so far: 248.0
Deduct 5112 from 5502 and we're left with 390.
Append the next digit (7) from the dividend to 390 and continue with: 3907 / 639

Advancing to step 7:
639 can be fit into 3907 6 times, resulting in a remainder of 73.
Use 6 as the next digit of our solution. 
Result so far: 2486.0
If we subtract 3834 from 3907, we get 73.
Grab the next digit (1) from the dividend, add it to 73, then carry on: 731 / 639

Step 8:
731 divided by 639 is 1 with a remainder of 92.
Record the quotient 1 as the next digit in the result. 
Result so far: 24861.0
If we subtract 639 from 731, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 9:
639 can be fit into 920 1 times, resulting in a remainder of 281.
The next digit of our result is 1. 
Result so far: 24861.1
If we subtract 639 from 920, we get 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

On to step 10:
The number 639 fits into 2810 4 times, leaving a remainder of 254.
The number 4 becomes the next digit in our result. 
Result so far: 24861.14
Subtract 2556 from 2810 to get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Going ahead to step 11:
639 goes into 2540 3 times with a remainder of 623.
Put 3 as the next digit of the answer. 
Result so far: 24861.143
Subtracting 1917 from 2540 leaves us with 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Moving on to step 12:
When dividing 6230 by 639, we get 9 with a remainder of 479.
Record the quotient 9 as the next digit in the result. 
Result so far: 24861.1439
The remainder is 479 after subtracting 5751 from 6230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Step 13:
If we divide 4790 by 639, we get 7 and a remainder of 317.
Record the quotient 7 as the next digit in the result. 
Result so far: 24861.14397
Subtracting 4473 from 4790 leaves us with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

On to step 14:
If we divide 3170 by 639, we get 4 and a remainder of 614.
The number 4 becomes the next digit in our result. 
Result so far: 24861.143974
Subtracting 2556 from 3170 leaves us with 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

Advancing to step 15:
639 goes into 6140 9 times with a remainder of 389.
Use 9 as the next digit of our solution. 
Result so far: 24861.1439749
Subtract 5751 from 6140 to get 389.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3890, and continue the process.

Advancing to step 16:
If we divide 3890 by 639, we get 6 and a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 24861.14397496
If we subtract 3834 from 3890, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final result is 24861.14397496 with a remainder of 5.6e-08.