Let's divide 423393 by 28
We want to figure out the number of times 423393 can be divided by 28.

On to step 1:
28 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 28

Going ahead to step 2:
42 divided by 28 is 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 28 away from 42, we end up with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 28

Let's proceed to step 3:
The number 28 fits into 143 5 times, leaving a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 140 from 143 to get 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 28

Moving on to step 4:
33 divided by 28 is 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 151.0
Deduct 28 from 33 and we're left with 5.
Grab the next digit (9) from the dividend, add it to 5, then carry on: 59 / 28

On to step 5:
28 goes into 59 2 times with a remainder of 3.
The next digit of our result is 2. 
Result so far: 1512.0
Subtracting 56 from 59 leaves us with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 28

On to step 6:
When dividing 33 by 28, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 15121.0
Subtracting 28 from 33 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
The number 28 fits into 50 1 times, leaving a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 15121.1
The remainder is 22 after subtracting 28 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 8:
28 goes into 220 7 times with a remainder of 24.
The number 7 becomes the next digit in our result. 
Result so far: 15121.17
Subtracting 196 from 220 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.

Moving on to step 9:
If we divide 240 by 28, we get 8 and a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 15121.178
Deduct 224 from 240 and we're left 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.

Advancing to step 10:
28 can be fit into 160 5 times, resulting in a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 15121.1785
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.

Advancing to step 11:
When dividing 200 by 28, we get 7 with a remainder of 4.
The next digit of our result is 7. 
Result so far: 15121.17857
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.

Advancing to step 12:
When dividing 40 by 28, we get 1 with a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 15121.178571
The remainder is 12 after subtracting 28 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
28 can be fit into 120 4 times, resulting in a remainder of 8.
The next digit of our result is 4. 
Result so far: 15121.1785714
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.

Going ahead to step 14:
When dividing 80 by 28, we get 2 with a remainder of 24.
The next digit of our result is 2. 
Result so far: 15121.17857142
Subtract 56 from 80 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.

In conclusion, the division gives 15121.17857142 with a balance of 2.4e-08.