512154 ÷ 28 
Our goal is to divide 512154 by 28.

On to step 1:
When dividing 5 by 28, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
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 / 28

Advancing to step 2:
When dividing 51 by 28, we get 1 with a remainder of 23.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 28 from 51 to get 23.
Fetch the next digit (2) from the dividend, attach it to 23 and continue: 232 / 28

Step 3:
232 divided by 28 is 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 18.0
The remainder is 8 after subtracting 224 from 232.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 28

On to step 4:
28 can be fit into 81 2 times, resulting in a remainder of 25.
The number 2 becomes the next digit in our result. 
Result so far: 182.0
If we subtract 56 from 81, we get 25.
Take the next digit (5) from the dividend and append it to 25, then repeat: 255 / 28

Moving on to step 5:
The number 28 fits into 255 9 times, leaving a remainder of 3.
The next digit of our result is 9. 
Result so far: 1829.0
If we subtract 252 from 255, we get 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 28

Let's proceed to step 6:
If we divide 34 by 28, we get 1 and a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 18291.0
Deduct 28 from 34 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
28 goes into 60 2 times with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 18291.2
If we subtract 56 from 60, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
When dividing 40 by 28, we get 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 18291.21
If we subtract 28 from 40, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
28 can be fit into 120 4 times, resulting in a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 18291.214
Deduct 112 from 120 and we're left with 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:
If we divide 80 by 28, we get 2 and a remainder of 24.
The next digit of our result is 2. 
Result so far: 18291.2142
Deduct 56 from 80 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 18291.21428
Deduct 224 from 240 and we're left 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.

Moving on to step 12:
If we divide 160 by 28, we get 5 and a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 18291.214285
Subtracting 140 from 160 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
200 divided by 28 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 18291.2142857
Deduct 196 from 200 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 14:
The number 28 fits into 40 1 times, leaving a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 18291.21428571
If we subtract 28 from 40, we get 12.
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 result is 18291.21428571 with a remainder of 1.2e-08.