We look at the division of 393609 by 48 
Let's see how many times 48 fits into 393609.

On to step 1:
3 divided by 48 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 48

Moving on to step 2:
48 goes into 39 0 times with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Take the next digit (3) from the dividend and append it to 39, then repeat: 393 / 48

Step 3:
The number 48 fits into 393 8 times, leaving a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 384 from 393 leaves us with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 48

Step 4:
If we divide 96 by 48, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 82.0
The remainder is 0 after subtracting 96 from 96.
Grab the next digit (0) from the dividend, add it to 0, then carry on: 0 / 48

Going ahead to step 5:
If we divide 0 by 48, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 820.0
If we take 0 away from 0, we end up with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 48

Going ahead to step 6:
When dividing 9 by 48, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 8200.0
Subtract 0 from 9 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 7:
The number 48 fits into 90 1 times, leaving a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 8200.1
Deduct 48 from 90 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 8:
48 goes into 420 8 times with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 8200.18
The remainder is 36 after subtracting 384 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
360 divided by 48 is 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 8200.187
Deduct 336 from 360 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
When dividing 240 by 48, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 8200.1875
The remainder is 0 after subtracting 240 from 240.
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 11:
If we divide 0 by 48, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 8200.1875
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 12:
48 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 8200.1875
Subtracting 0 from 0 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.

The final outcome is 8200.1875, with a leftover of 0.0.