423280 divided by 12 
Our goal is to divide 423280 by 12.

Advancing to step 1:
The number 12 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 12

On to step 2:
The number 12 fits into 42 3 times, leaving a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 36 from 42 to get 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 12

Let's proceed to step 3:
63 divided by 12 is 5 with a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
If we take 60 away from 63, we end up with 3.
Bring next digit (2) of the dividend behind the 3 and repeat the process: 32 / 12

Moving on to step 4:
If we divide 32 by 12, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 352.0
Subtract 24 from 32 to get 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 12

Step 5:
88 divided by 12 is 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 3527.0
Subtract 84 from 88 to get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 12

On to step 6:
When dividing 40 by 12, we get 3 with a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 35273.0
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.

Advancing to step 7:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 35273.3
If we take 36 away from 40, we end up 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.

Let's proceed to step 8:
12 can be fit into 40 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 35273.33
If we subtract 36 from 40, 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.

The quotient of the division is 35273.33, and the remainder is 0.004.