We look at the division of 5175921 by 256 
We want to divide 5175921 by 256.

On to step 1:
The number 256 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 256

Advancing to step 2:
If we divide 51 by 256, we get 0 and a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (7) from the dividend to 51 and continue with: 517 / 256

Advancing to step 3:
The number 256 fits into 517 2 times, leaving a remainder of 5.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 512 from 517 to get 5.
Grab the next digit (5) from the dividend, add it to 5, then carry on: 55 / 256

On to step 4:
The number 256 fits into 55 0 times, leaving a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Deduct 0 from 55 and we're left with 55.
Append the next digit (9) from the dividend to 55 and continue with: 559 / 256

Moving on to step 5:
When dividing 559 by 256, we get 2 with a remainder of 47.
Use 2 as the next digit of our solution. 
Result so far: 202.0
If we subtract 512 from 559, we get 47.
Include the next digit (2) from the dividend after 47, then repeat: 472 / 256

Step 6:
256 goes into 472 1 times with a remainder of 216.
Use 1 as the next digit of our solution. 
Result so far: 2021.0
If we take 256 away from 472, we end up with 216.
Fetch the next digit (1) from the dividend, attach it to 216 and continue: 2161 / 256

Going ahead to step 7:
2161 divided by 256 is 8 with a remainder of 113.
Put 8 as the next digit of the answer. 
Result so far: 20218.0
If we take 2048 away from 2161, we end up with 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

On to step 8:
256 can be fit into 1130 4 times, resulting in a remainder of 106.
Write down 4 as next digit of the result. 
Result so far: 20218.4
Subtract 1024 from 1130 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 9:
256 can be fit into 1060 4 times, resulting in a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 20218.44
The remainder is 36 after subtracting 1024 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The final result is 20218.44 with a remainder of 0.036.