We look at the division of 331512 by 1 
We want to divide 331512 by 1.

Step 1:
3 divided by 1 is 3 with a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 3 away from 3, we end up with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 1

Let's proceed to step 2:
1 can be fit into 3 3 times, resulting in a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we take 3 away from 3, we end up with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 1

Step 3:
1 can be fit into 1 1 times, resulting in a remainder of 0.
The next digit of our result is 1. 
Result so far: 331.0
If we subtract 1 from 1, we get 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 1

Advancing to step 4:
When dividing 5 by 1, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 3315.0
The remainder is 0 after subtracting 5 from 5.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 1

Moving on to step 5:
The number 1 fits into 1 1 times, leaving a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 33151.0
Subtract 1 from 1 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 1

Let's proceed to step 6:
1 goes into 2 2 times with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 331512.0
Subtract 2 from 2 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.

Step 7:
If we divide 0 by 1, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 331512.0
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.

On to step 8:
1 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 331512.0
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.

In conclusion, the division gives 331512.0 with a balance of 0.0.