Let's divide 28930890 by 639
We want to divide 28930890 by 639.

Step 1:
When dividing 2 by 639, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 639

Advancing to step 2:
639 can be fit into 28 0 times, resulting in a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 28, we get 28.
Grab the next digit (9) from the dividend, add it to 28, then carry on: 289 / 639

Going ahead to step 3:
When dividing 289 by 639, we get 0 with a remainder of 289.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 289 leaves us with 289.
Bring next digit (3) of the dividend behind the 289 and repeat the process: 2893 / 639

Let's proceed to step 4:
The number 639 fits into 2893 4 times, leaving a remainder of 337.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 2556 from 2893 to get 337.
Bring next digit (0) of the dividend behind the 337 and repeat the process: 3370 / 639

On to step 5:
The number 639 fits into 3370 5 times, leaving a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 45.0
Subtracting 3195 from 3370 leaves us with 175.
Grab the next digit (8) from the dividend, add it to 175, then carry on: 1758 / 639

Step 6:
If we divide 1758 by 639, we get 2 and a remainder of 480.
Write down 2 as next digit of the result. 
Result so far: 452.0
Deduct 1278 from 1758 and we're left with 480.
Fetch the next digit (9) from the dividend, attach it to 480 and continue: 4809 / 639

Step 7:
639 goes into 4809 7 times with a remainder of 336.
Put 7 as the next digit of the answer. 
Result so far: 4527.0
If we subtract 4473 from 4809, we get 336.
Grab the next digit (0) from the dividend, add it to 336, then carry on: 3360 / 639

Let's proceed to step 8:
639 goes into 3360 5 times with a remainder of 165.
The next digit of our result is 5. 
Result so far: 45275.0
If we subtract 3195 from 3360, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 9:
If we divide 1650 by 639, we get 2 and a remainder of 372.
The next digit of our result is 2. 
Result so far: 45275.2
If we subtract 1278 from 1650, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Going ahead to step 10:
639 goes into 3720 5 times with a remainder of 525.
Record the quotient 5 as the next digit in the result. 
Result so far: 45275.25
The remainder is 525 after subtracting 3195 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

On to step 11:
If we divide 5250 by 639, we get 8 and a remainder of 138.
The next digit of our result is 8. 
Result so far: 45275.258
If we subtract 5112 from 5250, we get 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Let's proceed to step 12:
639 goes into 1380 2 times with a remainder of 102.
Use 2 as the next digit of our solution. 
Result so far: 45275.2582
If we subtract 1278 from 1380, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Let's proceed to step 13:
1020 divided by 639 is 1 with a remainder of 381.
The next digit of our result is 1. 
Result so far: 45275.25821
If we subtract 639 from 1020, we get 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

On to step 14:
3810 divided by 639 is 5 with a remainder of 615.
Record the quotient 5 as the next digit in the result. 
Result so far: 45275.258215
Subtracting 3195 from 3810 leaves us with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

On to step 15:
The number 639 fits into 6150 9 times, leaving a remainder of 399.
Put 9 as the next digit of the answer. 
Result so far: 45275.2582159
Deduct 5751 from 6150 and we're left with 399.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

On to step 16:
3990 divided by 639 is 6 with a remainder of 156.
Put 6 as the next digit of the answer. 
Result so far: 45275.25821596
Deduct 3834 from 3990 and we're left with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

In conclusion, the division gives 45275.25821596 with a balance of 1.56e-07.