We divide 638903 by 28
Our goal is to divide 638903 by 28.

Moving on to step 1:
28 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 / 28

On to step 2:
The number 28 fits into 63 2 times, leaving a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 56 from 63, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 28

Step 3:
78 divided by 28 is 2 with a remainder of 22.
The next digit of our result is 2. 
Result so far: 22.0
If we subtract 56 from 78, we get 22.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 28

Going ahead to step 4:
If we divide 229 by 28, we get 8 and a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 228.0
Subtracting 224 from 229 leaves us with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 28

Step 5:
50 divided by 28 is 1 with a remainder of 22.
The next digit of our result is 1. 
Result so far: 2281.0
Subtract 28 from 50 to get 22.
Grab the next digit (3) from the dividend, add it to 22, then carry on: 223 / 28

Advancing to step 6:
The number 28 fits into 223 7 times, leaving a remainder of 27.
Put 7 as the next digit of the answer. 
Result so far: 22817.0
Subtract 196 from 223 to 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.

Moving on to step 7:
28 goes into 270 9 times with a remainder of 18.
The next digit of our result is 9. 
Result so far: 22817.9
Subtract 252 from 270 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 8:
When dividing 180 by 28, we get 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 22817.96
Deduct 168 from 180 and we're left with 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 9:
If we divide 120 by 28, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 22817.964
If we subtract 112 from 120, we 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.

Advancing to step 10:
28 can be fit into 80 2 times, resulting in a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 22817.9642
If we subtract 56 from 80, we 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.

Moving on to step 11:
When dividing 240 by 28, we get 8 with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 22817.96428
If we take 224 away from 240, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 12:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 22817.964285
If we subtract 140 from 160, 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.

Step 13:
If we divide 200 by 28, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 22817.9642857
The remainder is 4 after subtracting 196 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 14:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 22817.96428571
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 22817.96428571, with a leftover of 1.2e-08.