We look at the division of 363423 by 12 
Our goal is to divide 363423 by 12.

Advancing to step 1:
12 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 12

Advancing to step 2:
When dividing 36 by 12, we get 3 with a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 36 from 36 leaves us with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 12

Step 3:
3 divided by 12 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 12

Going ahead to step 4:
If we divide 34 by 12, we get 2 and a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 302.0
If we subtract 24 from 34, we get 10.
Take the next digit (2) from the dividend and append it to 10, then repeat: 102 / 12

Going ahead to step 5:
12 can be fit into 102 8 times, resulting in a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 3028.0
If we subtract 96 from 102, we get 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 12

Going ahead to step 6:
If we divide 63 by 12, we get 5 and a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 30285.0
Deduct 60 from 63 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
The number 12 fits into 30 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 30285.2
Subtracting 24 from 30 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 30285.25
Subtract 60 from 60 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
12 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30285.25
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
The number 12 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 30285.25
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 30285.25 with a remaining 0.0.