242409 divided by 12 
Our goal is to divide 242409 by 12.

Let's proceed to step 1:
If we divide 2 by 12, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 12

Moving on to step 2:
When dividing 24 by 12, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtract 24 from 24 to get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 12

Moving on to step 3:
When dividing 2 by 12, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 12

Step 4:
The number 12 fits into 24 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 202.0
If we subtract 24 from 24, we get 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 12

Step 5:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 2020.0
Deduct 0 from 0 and we're left with 0.
Bring next digit (9) of the dividend behind the 0 and repeat the process: 9 / 12

Moving on to step 6:
When dividing 9 by 12, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 20200.0
If we take 0 away from 9, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 7:
12 can be fit into 90 7 times, resulting in a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 20200.7
If we take 84 away from 90, we end up 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.

Step 8:
When dividing 60 by 12, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 20200.75
Deduct 60 from 60 and we're left 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.

Step 9:
0 divided by 12 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 20200.75
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.

Let's proceed to step 10:
If we divide 0 by 12, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 20200.75
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 20200.75 with a remaining 0.0.