We look at the division of 143478 by 12 
Our goal is to divide 143478 by 12.

On to step 1:
If we divide 1 by 12, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 12

On to step 2:
When dividing 14 by 12, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 12 from 14 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 12

On to step 3:
12 can be fit into 23 1 times, resulting in a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 12 from 23 and we're left with 11.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 12

Going ahead to step 4:
12 can be fit into 114 9 times, resulting in a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
The remainder is 6 after subtracting 108 from 114.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 12

Let's proceed to step 5:
If we divide 67 by 12, we get 5 and a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 1195.0
Deduct 60 from 67 and we're left with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 12

Let's proceed to step 6:
The number 12 fits into 78 6 times, leaving a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 11956.0
Deduct 72 from 78 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 7:
When dividing 60 by 12, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 11956.5
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 11956.5
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.

Moving on to step 9:
If we divide 0 by 12, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 11956.5
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.

Our division results in 11956.5 with a remaining 0.0.