We look at the division of 408129 by 28 
We're looking to find how many times 28 goes into 408129.

Step 1:
If we divide 4 by 28, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 28

Step 2:
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: 1.0
If we subtract 28 from 40, we get 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 28

Step 3:
28 can be fit into 128 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 112 from 128 and we're left with 16.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 28

Advancing to step 4:
The number 28 fits into 161 5 times, leaving a remainder of 21.
The number 5 becomes the next digit in our result. 
Result so far: 145.0
If we take 140 away from 161, we end up with 21.
Include the next digit (2) from the dividend after 21, then repeat: 212 / 28

Let's proceed to step 5:
If we divide 212 by 28, we get 7 and a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 1457.0
If we take 196 away from 212, we end up with 16.
Fetch the next digit (9) from the dividend, attach it to 16 and continue: 169 / 28

On to step 6:
28 goes into 169 6 times with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 14576.0
Subtracting 168 from 169 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
10 divided by 28 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 14576.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 28, we get 3 and a remainder of 16.
The number 3 becomes the next digit in our result. 
Result so far: 14576.03
Subtracting 84 from 100 leaves us 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.

Step 9:
The number 28 fits into 160 5 times, leaving a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 14576.035
If we subtract 140 from 160, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 10:
When dividing 200 by 28, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 14576.0357
If we take 196 away from 200, we end up 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.

Step 11:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 14576.03571
Subtracting 28 from 40 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 12:
When dividing 120 by 28, we get 4 with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 14576.035714
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.

Let's proceed to step 13:
80 divided by 28 is 2 with a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 14576.0357142
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.

Going ahead to step 14:
28 can be fit into 240 8 times, resulting in a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 14576.03571428
Subtracting 224 from 240 leaves us 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.

The final outcome is 14576.03571428, with a leftover of 1.6e-08.