We look at the division of 12903250 by 403 
Our goal is to divide 12903250 by 403.

On to step 1:
403 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 403

Let's proceed to step 2:
12 divided by 403 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 403

Going ahead to step 3:
The number 403 fits into 129 0 times, leaving a remainder of 129.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 129, we get 129.
Grab the next digit (0) from the dividend, add it to 129, then carry on: 1290 / 403

Let's proceed to step 4:
When dividing 1290 by 403, we get 3 with a remainder of 81.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we subtract 1209 from 1290, we get 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 403

Advancing to step 5:
403 can be fit into 813 2 times, resulting in a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Deduct 806 from 813 and we're left with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 403

Let's proceed to step 6:
If we divide 72 by 403, we get 0 and a remainder of 72.
The next digit of our result is 0. 
Result so far: 320.0
Subtract 0 from 72 to get 72.
Grab the next digit (5) from the dividend, add it to 72, then carry on: 725 / 403

Advancing to step 7:
If we divide 725 by 403, we get 1 and a remainder of 322.
The number 1 becomes the next digit in our result. 
Result so far: 3201.0
Subtract 403 from 725 to get 322.
Take the next digit (0) from the dividend and append it to 322, then repeat: 3220 / 403

Moving on to step 8:
403 goes into 3220 7 times with a remainder of 399.
Put 7 as the next digit of the answer. 
Result so far: 32017.0
The remainder is 399 after subtracting 2821 from 3220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

Step 9:
When dividing 3990 by 403, we get 9 with a remainder of 363.
Write down 9 as next digit of the result. 
Result so far: 32017.9
If we take 3627 away from 3990, we end up with 363.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3630, and continue the process.

Moving on to step 10:
If we divide 3630 by 403, we get 9 and a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 32017.99
If we subtract 3627 from 3630, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

In conclusion, the division gives 32017.99 with a balance of 0.003.