We divide 425422 by 12
We're looking to find how many times 12 goes into 425422.

Going ahead to step 1:
12 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 12

On to step 2:
If we divide 42 by 12, we get 3 and a remainder of 6.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 36 from 42 leaves us with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 12

Advancing to step 3:
If we divide 65 by 12, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 35.0
Deduct 60 from 65 and we're left with 5.
Grab the next digit (4) from the dividend, add it to 5, then carry on: 54 / 12

Going ahead to step 4:
12 can be fit into 54 4 times, resulting in a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 354.0
If we subtract 48 from 54, we get 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 12

On to step 5:
62 divided by 12 is 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 3545.0
Deduct 60 from 62 and we're left with 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 12

Moving on to step 6:
22 divided by 12 is 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 35451.0
Subtracting 12 from 22 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
If we divide 100 by 12, we get 8 and a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 35451.8
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 8:
40 divided by 12 is 3 with a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 35451.83
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
The number 12 fits into 40 3 times, leaving a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 35451.833
Subtracting 36 from 40 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 35451.833 with a remaining 0.0004.