We divide 423438 by 30
We're looking to find how many times 30 goes into 423438.

Moving on to step 1:
30 goes into 4 0 times with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 30

Let's proceed to step 2:
30 can be fit into 42 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 30 from 42 to get 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 30

Moving on to step 3:
When dividing 123 by 30, we get 4 with a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 120 from 123 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 30

On to step 4:
The number 30 fits into 34 1 times, leaving a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 141.0
If we subtract 30 from 34, we get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 30

Moving on to step 5:
The number 30 fits into 43 1 times, leaving a remainder of 13.
Record the quotient 1 as the next digit in the result. 
Result so far: 1411.0
The remainder is 13 after subtracting 30 from 43.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 30

Step 6:
The number 30 fits into 138 4 times, leaving a remainder of 18.
Use 4 as the next digit of our solution. 
Result so far: 14114.0
The remainder is 18 after subtracting 120 from 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
When dividing 180 by 30, we get 6 with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 14114.6
Deduct 180 from 180 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.

Step 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 14114.6
If we subtract 0 from 0, we 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.

Moving on to step 9:
0 divided by 30 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 14114.6
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.

The final result is 14114.6 with a remainder of 0.0.