We look at the division of 403251 by 30 
We want to divide 403251 by 30.

Advancing to step 1:
30 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 30

Step 2:
30 can be fit into 40 1 times, resulting in a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 10 after subtracting 30 from 40.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 30

Moving on to step 3:
If we divide 103 by 30, we get 3 and a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 13.0
The remainder is 13 after subtracting 90 from 103.
Include the next digit (2) from the dividend after 13, then repeat: 132 / 30

Let's proceed to step 4:
30 goes into 132 4 times with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 134.0
Deduct 120 from 132 and we're left with 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 30

Step 5:
When dividing 125 by 30, we get 4 with a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 1344.0
Subtract 120 from 125 to get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 30

Step 6:
30 goes into 51 1 times with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 13441.0
The remainder is 21 after subtracting 30 from 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
The number 30 fits into 210 7 times, leaving a remainder of 0.
Put 7 as the next digit of the answer. 
Result so far: 13441.7
Deduct 210 from 210 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 8:
When dividing 0 by 30, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 13441.7
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.

Advancing to step 9:
When dividing 0 by 30, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 13441.7
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.

The final result is 13441.7 with a remainder of 0.0.