We look at the division of 120839 by 28 
Let's see how many times 28 fits into 120839.

Step 1:
When dividing 1 by 28, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 28

Going ahead to step 2:
If we divide 12 by 28, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 28

Advancing to step 3:
The number 28 fits into 120 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we subtract 112 from 120, we get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 28

Going ahead to step 4:
28 can be fit into 88 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtracting 84 from 88 leaves us with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 28

Going ahead to step 5:
The number 28 fits into 43 1 times, leaving a remainder of 15.
Put 1 as the next digit of the answer. 
Result so far: 431.0
Subtracting 28 from 43 leaves us with 15.
Fetch the next digit (9) from the dividend, attach it to 15 and continue: 159 / 28

On to step 6:
159 divided by 28 is 5 with a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 4315.0
Subtract 140 from 159 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.

On to step 7:
190 divided by 28 is 6 with a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 4315.6
Deduct 168 from 190 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 8:
If we divide 220 by 28, we get 7 and a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 4315.67
Subtract 196 from 220 to 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.

Going ahead to step 9:
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: 4315.678
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 10:
28 goes into 160 5 times with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 4315.6785
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.

Going ahead to step 11:
28 can be fit into 200 7 times, resulting in a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 4315.67857
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.

On to step 12:
28 can be fit into 40 1 times, resulting in a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 4315.678571
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.

Moving on to step 13:
If we divide 120 by 28, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 4315.6785714
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.

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: 4315.67857142
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.

Our division results in 4315.67857142 with a remaining 2.4e-08.