We look at the division of 408987 by 28 
Our goal is to divide 408987 by 28.

Advancing to step 1:
The number 28 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 28

Moving on to step 2:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 28 from 40 leaves us with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 28

Let's proceed to step 3:
128 divided by 28 is 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 112 from 128 to get 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 28

Going ahead to step 4:
169 divided by 28 is 6 with a remainder of 1.
Put 6 as the next digit of the answer. 
Result so far: 146.0
Subtracting 168 from 169 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 28

Step 5:
When dividing 18 by 28, we get 0 with a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 1460.0
Subtract 0 from 18 to get 18.
Grab the next digit (7) from the dividend, add it to 18, then carry on: 187 / 28

Going ahead to step 6:
28 can be fit into 187 6 times, resulting in a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 14606.0
Subtract 168 from 187 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
The number 28 fits into 190 6 times, leaving a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 14606.6
Subtract 168 from 190 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
The number 28 fits into 220 7 times, leaving a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 14606.67
The remainder is 24 after subtracting 196 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
If we divide 240 by 28, we get 8 and a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 14606.678
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.

Advancing to step 10:
160 divided by 28 is 5 with a remainder of 20.
Put 5 as the next digit of the answer. 
Result so far: 14606.6785
The remainder is 20 after subtracting 140 from 160.
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 11:
When dividing 200 by 28, we get 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 14606.67857
Subtracting 196 from 200 leaves us 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.

On to step 12:
28 can be fit into 40 1 times, resulting in a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 14606.678571
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 13:
If we divide 120 by 28, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 14606.6785714
If we subtract 112 from 120, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 14:
When dividing 80 by 28, we get 2 with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 14606.67857142
If we subtract 56 from 80, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 14606.67857142, with a leftover of 2.4e-08.