399193 divided by 28 
Our goal is to divide 399193 by 28.

Let's proceed to step 1:
28 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 28

Let's proceed to step 2:
28 can be fit into 39 1 times, resulting in a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 28 from 39 leaves us with 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 28

Let's proceed to step 3:
119 divided by 28 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Subtract 112 from 119 to get 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 28

Going ahead to step 4:
The number 28 fits into 71 2 times, leaving a remainder of 15.
Write down 2 as next digit of the result. 
Result so far: 142.0
Deduct 56 from 71 and we're left with 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 28

Moving on to step 5:
When dividing 159 by 28, we get 5 with a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 1425.0
Deduct 140 from 159 and we're left with 19.
Append the next digit (3) from the dividend to 19 and continue with: 193 / 28

Let's proceed to step 6:
28 goes into 193 6 times with a remainder of 25.
The next digit of our result is 6. 
Result so far: 14256.0
If we take 168 away from 193, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 7:
If we divide 250 by 28, we get 8 and a remainder of 26.
The next digit of our result is 8. 
Result so far: 14256.8
Subtracting 224 from 250 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 8:
If we divide 260 by 28, we get 9 and a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 14256.89
Subtract 252 from 260 to 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 9:
80 divided by 28 is 2 with a remainder of 24.
The number 2 becomes the next digit in our result. 
Result so far: 14256.892
Subtracting 56 from 80 leaves us 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.

Advancing to step 10:
28 can be fit into 240 8 times, resulting in a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 14256.8928
If we take 224 away from 240, we end up 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.

Going ahead to step 11:
28 goes into 160 5 times with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 14256.89285
Subtract 140 from 160 to 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.

Moving on to step 12:
28 goes into 200 7 times with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 14256.892857
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.

Let's proceed to step 13:
The number 28 fits into 40 1 times, leaving a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 14256.8928571
Deduct 28 from 40 and we're left 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 14:
28 goes into 120 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 14256.89285714
Subtract 112 from 120 to 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.

The final result is 14256.89285714 with a remainder of 8e-09.