249404 ÷ 20 
Our goal is to divide 249404 by 20.

Advancing to step 1:
When dividing 2 by 20, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 20

Advancing to step 2:
20 can be fit into 24 1 times, resulting in a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 4 after subtracting 20 from 24.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 20

Going ahead to step 3:
When dividing 49 by 20, we get 2 with a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 40 from 49, we get 9.
Append the next digit (4) from the dividend to 9 and continue with: 94 / 20

Let's proceed to step 4:
20 can be fit into 94 4 times, resulting in a remainder of 14.
The next digit of our result is 4. 
Result so far: 124.0
Deduct 80 from 94 and we're left with 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 20

Advancing to step 5:
20 goes into 140 7 times with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 1247.0
The remainder is 0 after subtracting 140 from 140.
Include the next digit (4) from the dividend after 0, then repeat: 4 / 20

Moving on to step 6:
4 divided by 20 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 12470.0
Deduct 0 from 4 and we're left 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.

Moving on to step 7:
When dividing 40 by 20, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 12470.2
Subtracting 40 from 40 leaves us 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.

Advancing to step 8:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 12470.2
Deduct 0 from 0 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:
20 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 12470.2
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.

After the division, we end up with 12470.2 and a remainder of 0.0.