We're dividing 398208 by 54 
Let's see how many times 54 fits into 398208.

On to step 1:
54 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 54

Going ahead to step 2:
54 goes into 39 0 times with a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Include the next digit (8) from the dividend after 39, then repeat: 398 / 54

Moving on to step 3:
54 goes into 398 7 times with a remainder of 20.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 378 from 398 leaves us with 20.
Include the next digit (2) from the dividend after 20, then repeat: 202 / 54

Let's proceed to step 4:
The number 54 fits into 202 3 times, leaving a remainder of 40.
Use 3 as the next digit of our solution. 
Result so far: 73.0
If we take 162 away from 202, we end up with 40.
Fetch the next digit (0) from the dividend, attach it to 40 and continue: 400 / 54

Moving on to step 5:
54 goes into 400 7 times with a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 737.0
Subtract 378 from 400 to get 22.
Bring next digit (8) of the dividend behind the 22 and repeat the process: 228 / 54

Going ahead to step 6:
54 goes into 228 4 times with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 7374.0
The remainder is 12 after subtracting 216 from 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 7:
The number 54 fits into 120 2 times, leaving a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 7374.2
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 8:
54 can be fit into 120 2 times, resulting in a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 7374.22
If we subtract 108 from 120, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 7374.22 with a remainder of 0.012.