We're dividing 391878 by 28 
We're looking to find how many times 28 goes into 391878.

Moving on to step 1:
28 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 28

Let's proceed to step 2:
39 divided by 28 is 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 28 from 39, we get 11.
Take the next digit (1) from the dividend and append it to 11, then repeat: 111 / 28

Going ahead to step 3:
28 goes into 111 3 times with a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 84 away from 111, we end up with 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 28

Let's proceed to step 4:
28 goes into 278 9 times with a remainder of 26.
Use 9 as the next digit of our solution. 
Result so far: 139.0
The remainder is 26 after subtracting 252 from 278.
Append the next digit (7) from the dividend to 26 and continue with: 267 / 28

Let's proceed to step 5:
When dividing 267 by 28, we get 9 with a remainder of 15.
Write down 9 as next digit of the result. 
Result so far: 1399.0
Deduct 252 from 267 and we're left with 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 28

Let's proceed to step 6:
28 can be fit into 158 5 times, resulting in a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 13995.0
Deduct 140 from 158 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
The number 28 fits into 180 6 times, leaving a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 13995.6
Deduct 168 from 180 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.

On to step 8:
When dividing 120 by 28, we get 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 13995.64
The remainder is 8 after subtracting 112 from 120.
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 next digit of our result is 2. 
Result so far: 13995.642
The remainder is 24 after subtracting 56 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 10:
The number 28 fits into 240 8 times, leaving a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 13995.6428
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.

On to step 11:
28 can be fit into 160 5 times, resulting in a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 13995.64285
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.

Step 12:
If we divide 200 by 28, we get 7 and a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 13995.642857
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.

Going ahead to step 13:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 13995.6428571
If we take 28 away from 40, we end up 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.

Going ahead to step 14:
If we divide 120 by 28, we get 4 and a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 13995.64285714
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.

After the division, we end up with 13995.64285714 and a remainder of 8e-09.