478421 divided by 28 
Let's see how many times 28 fits into 478421.

On to step 1:
28 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 28

Advancing to step 2:
The number 28 fits into 47 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 28 from 47 leaves us with 19.
Take the next digit (8) from the dividend and append it to 19, then repeat: 198 / 28

Step 3:
28 goes into 198 7 times with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 196 from 198, we get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 28

On to step 4:
When dividing 24 by 28, we get 0 with a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 170.0
Deduct 0 from 24 and we're left with 24.
Fetch the next digit (2) from the dividend, attach it to 24 and continue: 242 / 28

Step 5:
28 goes into 242 8 times with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 1708.0
If we take 224 away from 242, we end up with 18.
Take the next digit (1) from the dividend and append it to 18, then repeat: 181 / 28

Step 6:
28 goes into 181 6 times with a remainder of 13.
Record the quotient 6 as the next digit in the result. 
Result so far: 17086.0
If we take 168 away from 181, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
When dividing 130 by 28, we get 4 with a remainder of 18.
Write down 4 as next digit of the result. 
Result so far: 17086.4
Subtract 112 from 130 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
When dividing 180 by 28, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 17086.46
The remainder is 12 after subtracting 168 from 180.
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 9:
28 goes into 120 4 times with a remainder of 8.
The next digit of our result is 4. 
Result so far: 17086.464
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.

Going ahead to step 10:
The number 28 fits into 80 2 times, leaving a remainder of 24.
The next digit of our result is 2. 
Result so far: 17086.4642
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.

Going ahead to step 11:
When dividing 240 by 28, we get 8 with a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 17086.46428
Subtract 224 from 240 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 12:
160 divided by 28 is 5 with a remainder of 20.
The next digit of our result is 5. 
Result so far: 17086.464285
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 13:
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: 17086.4642857
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.

Moving on to step 14:
40 divided by 28 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 17086.46428571
Subtract 28 from 40 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 17086.46428571, with a leftover of 1.2e-08.