413415 ÷ 12 
Our goal is to divide 413415 by 12.

Going ahead to step 1:
When dividing 4 by 12, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 12

Advancing to step 2:
41 divided by 12 is 3 with a remainder of 5.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 36 from 41, we get 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 12

On to step 3:
The number 12 fits into 53 4 times, leaving a remainder of 5.
The next digit of our result is 4. 
Result so far: 34.0
If we subtract 48 from 53, we get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 12

Step 4:
54 divided by 12 is 4 with a remainder of 6.
The next digit of our result is 4. 
Result so far: 344.0
Subtract 48 from 54 to get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 12

Moving on to step 5:
61 divided by 12 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 3445.0
The remainder is 1 after subtracting 60 from 61.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 12

Let's proceed to step 6:
When dividing 15 by 12, we get 1 with a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 34451.0
The remainder is 3 after subtracting 12 from 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
12 goes into 30 2 times with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 34451.2
Subtract 24 from 30 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.

Moving on to step 8:
The number 12 fits into 60 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 34451.25
Subtract 60 from 60 to get 0.
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 9:
0 divided by 12 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 34451.25
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.

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: 34451.25
If we take 0 away from 0, we end up 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 34451.25, with a leftover of 0.0.