425412 ÷ 12 
We want to figure out the number of times 425412 can be divided by 12.

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
If we take 0 away from 4, we end up with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 12

Let's proceed to step 2:
The number 12 fits into 42 3 times, leaving a remainder of 6.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 36 from 42 to get 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 12

Going ahead to step 3:
When dividing 65 by 12, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
If we take 60 away from 65, we end up with 5.
Take the next digit (4) from the dividend and append it to 5, then repeat: 54 / 12

Let's proceed to step 4:
54 divided by 12 is 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 354.0
The remainder is 6 after subtracting 48 from 54.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 12

Let's proceed to step 5:
When dividing 61 by 12, we get 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 3545.0
Deduct 60 from 61 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 12

Going ahead to step 6:
When dividing 12 by 12, we get 1 with a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 35451.0
The remainder is 0 after subtracting 12 from 12.
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 7:
When dividing 0 by 12, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 35451.0
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.

Advancing to step 8:
0 divided by 12 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 35451.0
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.

Our division results in 35451.0 with a remaining 0.0.