30420309 ÷ 483 
Let's see how many times 483 fits into 30420309.

Moving on to step 1:
483 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 483

Going ahead to step 2:
If we divide 30 by 483, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Fetch the next digit (4) from the dividend, attach it to 30 and continue: 304 / 483

Advancing to step 3:
When dividing 304 by 483, we get 0 with a remainder of 304.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 304 after subtracting 0 from 304.
Append the next digit (2) from the dividend to 304 and continue with: 3042 / 483

Advancing to step 4:
When dividing 3042 by 483, we get 6 with a remainder of 144.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 144 after subtracting 2898 from 3042.
Grab the next digit (0) from the dividend, add it to 144, then carry on: 1440 / 483

Step 5:
483 can be fit into 1440 2 times, resulting in a remainder of 474.
Put 2 as the next digit of the answer. 
Result so far: 62.0
Deduct 966 from 1440 and we're left with 474.
Append the next digit (3) from the dividend to 474 and continue with: 4743 / 483

Moving on to step 6:
483 goes into 4743 9 times with a remainder of 396.
Write down 9 as next digit of the result. 
Result so far: 629.0
The remainder is 396 after subtracting 4347 from 4743.
Bring next digit (0) of the dividend behind the 396 and repeat the process: 3960 / 483

Going ahead to step 7:
483 can be fit into 3960 8 times, resulting in a remainder of 96.
Put 8 as the next digit of the answer. 
Result so far: 6298.0
If we subtract 3864 from 3960, we get 96.
Fetch the next digit (9) from the dividend, attach it to 96 and continue: 969 / 483

Going ahead to step 8:
The number 483 fits into 969 2 times, leaving a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 62982.0
The remainder is 3 after subtracting 966 from 969.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
When dividing 30 by 483, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 62982.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
300 divided by 483 is 0 with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 62982.0
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final result is 62982.0 with a remainder of 0.3.