We look at the division of 405911 by 12 
Our goal is to divide 405911 by 12.

Moving on to step 1:
4 divided by 12 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 12

Step 2:
40 divided by 12 is 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 36 from 40 to get 4.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 12

Going ahead to step 3:
45 divided by 12 is 3 with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtract 36 from 45 to get 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 12

Let's proceed to step 4:
When dividing 99 by 12, we get 8 with a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 338.0
Subtract 96 from 99 to get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 12

Step 5:
When dividing 31 by 12, we get 2 with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 3382.0
The remainder is 7 after subtracting 24 from 31.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 12

Moving on to step 6:
12 goes into 71 5 times with a remainder of 11.
Put 5 as the next digit of the answer. 
Result so far: 33825.0
If we subtract 60 from 71, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 7:
When dividing 110 by 12, we get 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 33825.9
Deduct 108 from 110 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 33825.91
The remainder is 8 after subtracting 12 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
12 goes into 80 6 times with a remainder of 8.
The next digit of our result is 6. 
Result so far: 33825.916
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
80 divided by 12 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 33825.9166
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 33825.9166, with a leftover of 8e-05.