We look at the division of 515445 by 28 
We want to divide 515445 by 28.

Advancing to step 1:
If we divide 5 by 28, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 28

Step 2:
The number 28 fits into 51 1 times, leaving a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 23 after subtracting 28 from 51.
Append the next digit (5) from the dividend to 23 and continue with: 235 / 28

On to step 3:
The number 28 fits into 235 8 times, leaving a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 18.0
Subtract 224 from 235 to get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 28

Step 4:
28 can be fit into 114 4 times, resulting in a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 184.0
If we subtract 112 from 114, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 28

Moving on to step 5:
28 goes into 24 0 times with a remainder of 24.
Record the quotient 0 as the next digit in the result. 
Result so far: 1840.0
If we subtract 0 from 24, we get 24.
Grab the next digit (5) from the dividend, add it to 24, then carry on: 245 / 28

On to step 6:
245 divided by 28 is 8 with a remainder of 21.
The next digit of our result is 8. 
Result so far: 18408.0
The remainder is 21 after subtracting 224 from 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 7:
The number 28 fits into 210 7 times, leaving a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 18408.7
If we take 196 away from 210, we end up with 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:
140 divided by 28 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 18408.75
Subtracting 140 from 140 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.

On to step 9:
28 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 18408.75
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.

Moving on to step 10:
The number 28 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 18408.75
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 result is 18408.75 with a remainder of 0.0.