Let's divide 243394 by 12
Let's see how many times 12 fits into 243394.

Advancing to step 1:
If we divide 2 by 12, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 12

Going ahead to step 2:
12 can be fit into 24 2 times, resulting in a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 24 from 24 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 12

Let's proceed to step 3:
The number 12 fits into 3 0 times, leaving a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 12

Let's proceed to step 4:
33 divided by 12 is 2 with a remainder of 9.
The number 2 becomes the next digit in our result. 
Result so far: 202.0
Subtracting 24 from 33 leaves us with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 12

On to step 5:
When dividing 99 by 12, we get 8 with a remainder of 3.
The next digit of our result is 8. 
Result so far: 2028.0
Deduct 96 from 99 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 12

On to step 6:
34 divided by 12 is 2 with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 20282.0
The remainder is 10 after subtracting 24 from 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 7:
100 divided by 12 is 8 with a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 20282.8
Subtract 96 from 100 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 8:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 20282.83
If we subtract 36 from 40, we get 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 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 20282.833
Subtracting 36 from 40 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.

The final result is 20282.833 with a remainder of 0.0004.