We look at the division of 389920 by 18 
We're looking to find how many times 18 goes into 389920.

Going ahead to step 1:
18 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 18

Step 2:
18 can be fit into 38 2 times, resulting in a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 36 from 38, we get 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 18

Advancing to step 3:
The number 18 fits into 29 1 times, leaving a remainder of 11.
The next digit of our result is 1. 
Result so far: 21.0
If we subtract 18 from 29, we get 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 18

Let's proceed to step 4:
The number 18 fits into 119 6 times, leaving a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 216.0
If we subtract 108 from 119, we get 11.
Include the next digit (2) from the dividend after 11, then repeat: 112 / 18

Going ahead to step 5:
112 divided by 18 is 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 2166.0
The remainder is 4 after subtracting 108 from 112.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 18

Advancing to step 6:
The number 18 fits into 40 2 times, leaving a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 21662.0
The remainder is 4 after subtracting 36 from 40.
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 7:
When dividing 40 by 18, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 21662.2
Subtract 36 from 40 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.

Advancing to step 8:
When dividing 40 by 18, we get 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 21662.22
Subtract 36 from 40 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.

After the division, we end up with 21662.22 and a remainder of 0.004.