We're dividing 391666 by 30 
Let's see how many times 30 fits into 391666.

Advancing to step 1:
30 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
The remainder is 3 after subtracting 0 from 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 30

Moving on to step 2:
39 divided by 30 is 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 30 from 39 to get 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 30

On to step 3:
If we divide 91 by 30, we get 3 and a remainder of 1.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 90 from 91 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 30

Step 4:
30 can be fit into 16 0 times, resulting in a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 130.0
Subtract 0 from 16 to get 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 30

Step 5:
30 goes into 166 5 times with a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 1305.0
If we take 150 away from 166, we end up with 16.
Include the next digit (6) from the dividend after 16, then repeat: 166 / 30

Moving on to step 6:
When dividing 166 by 30, we get 5 with a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 13055.0
The remainder is 16 after subtracting 150 from 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
When dividing 160 by 30, we get 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 13055.5
Subtract 150 from 160 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 30, we get 3 and a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 13055.53
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
100 divided by 30 is 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 13055.533
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 13055.533, and the remainder is 0.001.