We're dividing 400320 by 18 
We want to figure out the number of times 400320 can be divided by 18.

Advancing to step 1:
When dividing 4 by 18, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 18

On to step 2:
18 can be fit into 40 2 times, resulting in a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 36 from 40 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 18

Moving on to step 3:
18 goes into 40 2 times with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtracting 36 from 40 leaves us with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 18

Going ahead to step 4:
If we divide 43 by 18, we get 2 and a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 222.0
If we subtract 36 from 43, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 18

Let's proceed to step 5:
18 can be fit into 72 4 times, resulting in a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 2224.0
If we take 72 away from 72, we end up with 0.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 18

Going ahead to step 6:
18 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 22240.0
Subtract 0 from 0 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 7:
If we divide 0 by 18, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 22240.0
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 8:
When dividing 0 by 18, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 22240.0
Subtract 0 from 0 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.

In conclusion, the division gives 22240.0 with a balance of 0.0.