We divide 399241 by 18
We want to divide 399241 by 18.

Let's proceed to step 1:
The number 18 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 18

On to step 2:
When dividing 39 by 18, we get 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 36 from 39 to get 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 18

Step 3:
The number 18 fits into 39 2 times, leaving a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 22.0
Subtract 36 from 39 to get 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 18

Going ahead to step 4:
32 divided by 18 is 1 with a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 221.0
Deduct 18 from 32 and we're left with 14.
Fetch the next digit (4) from the dividend, attach it to 14 and continue: 144 / 18

Step 5:
If we divide 144 by 18, we get 8 and a remainder of 0.
The next digit of our result is 8. 
Result so far: 2218.0
Subtract 144 from 144 to get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 18

Going ahead to step 6:
The number 18 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 22180.0
If we take 0 away from 1, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
10 divided by 18 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 22180.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
18 goes into 100 5 times with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 22180.05
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
When dividing 100 by 18, we get 5 with a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 22180.055
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 22180.055, with a leftover of 0.001.