We're dividing 640955 by 28 
Let's see how many times 28 fits into 640955.

Advancing to step 1:
If we divide 6 by 28, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 28

Let's proceed to step 2:
28 can be fit into 64 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 56 from 64 leaves us with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 28

Going ahead to step 3:
If we divide 80 by 28, we get 2 and a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 56 from 80 to get 24.
Fetch the next digit (9) from the dividend, attach it to 24 and continue: 249 / 28

Step 4:
249 divided by 28 is 8 with a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 228.0
Subtracting 224 from 249 leaves us with 25.
Take the next digit (5) from the dividend and append it to 25, then repeat: 255 / 28

Advancing to step 5:
The number 28 fits into 255 9 times, leaving a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 2289.0
Subtract 252 from 255 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 28

Advancing to step 6:
If we divide 35 by 28, we get 1 and a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 22891.0
Deduct 28 from 35 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 7:
70 divided by 28 is 2 with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 22891.2
If we subtract 56 from 70, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
If we divide 140 by 28, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 22891.25
Subtract 140 from 140 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
28 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 22891.25
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
When dividing 0 by 28, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22891.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 22891.25, with a leftover of 0.0.