We divide 28390205 by 12
Our goal is to divide 28390205 by 12.

Step 1:
If we divide 2 by 12, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 12

Let's proceed to step 2:
28 divided by 12 is 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 4 after subtracting 24 from 28.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 12

Moving on to step 3:
43 divided by 12 is 3 with a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 23.0
Subtracting 36 from 43 leaves us with 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 12

Let's proceed to step 4:
The number 12 fits into 79 6 times, leaving a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 236.0
If we subtract 72 from 79, we get 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 12

On to step 5:
12 can be fit into 70 5 times, resulting in a remainder of 10.
The next digit of our result is 5. 
Result so far: 2365.0
If we subtract 60 from 70, we get 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 12

Going ahead to step 6:
12 goes into 102 8 times with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 23658.0
Deduct 96 from 102 and we're left with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 12

Let's proceed to step 7:
If we divide 60 by 12, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 236585.0
If we subtract 60 from 60, we get 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 12

Step 8:
5 divided by 12 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 2365850.0
If we subtract 0 from 5, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
If we divide 50 by 12, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 2365850.4
Subtract 48 from 50 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 10:
12 can be fit into 20 1 times, resulting in a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 2365850.41
Subtract 12 from 20 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 11:
12 goes into 80 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 2365850.416
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 12:
The number 12 fits into 80 6 times, leaving a remainder of 8.
The next digit of our result is 6. 
Result so far: 2365850.4166
Subtract 72 from 80 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 2365850.4166 with a remainder of 8e-05.