We look at the division of 642859 by 28 
Let's see how many times 28 fits into 642859.

Advancing to step 1:
When dividing 6 by 28, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 28

Let's proceed to step 2:
If we divide 64 by 28, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 56 from 64, we get 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 28

Going ahead to step 3:
The number 28 fits into 82 2 times, leaving a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 56 from 82 to get 26.
Fetch the next digit (8) from the dividend, attach it to 26 and continue: 268 / 28

Let's proceed to step 4:
The number 28 fits into 268 9 times, leaving a remainder of 16.
The next digit of our result is 9. 
Result so far: 229.0
If we subtract 252 from 268, we get 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 28

On to step 5:
28 can be fit into 165 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 2295.0
If we subtract 140 from 165, we get 25.
Include the next digit (9) from the dividend after 25, then repeat: 259 / 28

Going ahead to step 6:
The number 28 fits into 259 9 times, leaving a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 22959.0
If we subtract 252 from 259, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
28 goes into 70 2 times with a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 22959.2
The remainder is 14 after subtracting 56 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 8:
28 can be fit into 140 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 22959.25
If we subtract 140 from 140, 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.

On to step 9:
0 divided by 28 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22959.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
When dividing 0 by 28, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 22959.25
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 22959.25 and a remainder of 0.0.