We look at the division of 390117 by 12 
We want to divide 390117 by 12.

Moving on to step 1:
The number 12 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
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 / 12

Step 2:
If we divide 39 by 12, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 3 after subtracting 36 from 39.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 12

Advancing to step 3:
12 can be fit into 30 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Deduct 24 from 30 and we're left with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 12

Advancing to step 4:
12 goes into 61 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 325.0
Deduct 60 from 61 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 12

Let's proceed to step 5:
12 can be fit into 11 0 times, resulting in a remainder of 11.
Use 0 as the next digit of our solution. 
Result so far: 3250.0
If we subtract 0 from 11, we get 11.
Fetch the next digit (7) from the dividend, attach it to 11 and continue: 117 / 12

On to step 6:
12 can be fit into 117 9 times, resulting in a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 32509.0
If we take 108 away from 117, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 7:
90 divided by 12 is 7 with a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 32509.7
Subtract 84 from 90 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
The next digit of our result is 5. 
Result so far: 32509.75
Subtracting 60 from 60 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.

Let's proceed to step 9:
12 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: 32509.75
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 10:
12 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 32509.75
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.

The final result is 32509.75 with a remainder of 0.0.