25616094 divided by 639 
We want to figure out the number of times 25616094 can be divided by 639.

Going ahead to step 1:
When dividing 2 by 639, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 639

Going ahead to step 2:
639 goes into 25 0 times with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Bring next digit (6) of the dividend behind the 25 and repeat the process: 256 / 639

Step 3:
The number 639 fits into 256 0 times, leaving a remainder of 256.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 256, we get 256.
Append the next digit (1) from the dividend to 256 and continue with: 2561 / 639

Moving on to step 4:
2561 divided by 639 is 4 with a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 2556 from 2561 and we're left with 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 639

Step 5:
If we divide 56 by 639, we get 0 and a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 56, we end up with 56.
Bring next digit (0) of the dividend behind the 56 and repeat the process: 560 / 639

Going ahead to step 6:
The number 639 fits into 560 0 times, leaving a remainder of 560.
Record the quotient 0 as the next digit in the result. 
Result so far: 400.0
Subtracting 0 from 560 leaves us with 560.
Take the next digit (9) from the dividend and append it to 560, then repeat: 5609 / 639

Advancing to step 7:
639 can be fit into 5609 8 times, resulting in a remainder of 497.
The next digit of our result is 8. 
Result so far: 4008.0
If we subtract 5112 from 5609, we get 497.
Bring next digit (4) of the dividend behind the 497 and repeat the process: 4974 / 639

Let's proceed to step 8:
639 can be fit into 4974 7 times, resulting in a remainder of 501.
Put 7 as the next digit of the answer. 
Result so far: 40087.0
The remainder is 501 after subtracting 4473 from 4974.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

On to step 9:
639 goes into 5010 7 times with a remainder of 537.
The number 7 becomes the next digit in our result. 
Result so far: 40087.7
The remainder is 537 after subtracting 4473 from 5010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Step 10:
The number 639 fits into 5370 8 times, leaving a remainder of 258.
The number 8 becomes the next digit in our result. 
Result so far: 40087.78
Subtract 5112 from 5370 to get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

On to step 11:
The number 639 fits into 2580 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 40087.784
Subtract 2556 from 2580 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 12:
If we divide 240 by 639, we get 0 and a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 40087.784
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 13:
The number 639 fits into 2400 3 times, leaving a remainder of 483.
Put 3 as the next digit of the answer. 
Result so far: 40087.78403
The remainder is 483 after subtracting 1917 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Let's proceed to step 14:
The number 639 fits into 4830 7 times, leaving a remainder of 357.
Record the quotient 7 as the next digit in the result. 
Result so far: 40087.784037
If we take 4473 away from 4830, we end up with 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Step 15:
The number 639 fits into 3570 5 times, leaving a remainder of 375.
The number 5 becomes the next digit in our result. 
Result so far: 40087.7840375
If we subtract 3195 from 3570, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 16:
When dividing 3750 by 639, we get 5 with a remainder of 555.
Record the quotient 5 as the next digit in the result. 
Result so far: 40087.78403755
Deduct 3195 from 3750 and we're left with 555.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

After the division, we end up with 40087.78403755 and a remainder of 5.55e-07.