30800243 ÷ 603 
We want to divide 30800243 by 603.

On to step 1:
603 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 603

Advancing to step 2:
If we divide 30 by 603, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Include the next digit (8) from the dividend after 30, then repeat: 308 / 603

Let's proceed to step 3:
603 can be fit into 308 0 times, resulting in a remainder of 308.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 308, we get 308.
Bring next digit (0) of the dividend behind the 308 and repeat the process: 3080 / 603

Going ahead to step 4:
When dividing 3080 by 603, we get 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 3015 away from 3080, we end up with 65.
Grab the next digit (0) from the dividend, add it to 65, then carry on: 650 / 603

Advancing to step 5:
650 divided by 603 is 1 with a remainder of 47.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Subtracting 603 from 650 leaves us with 47.
Fetch the next digit (2) from the dividend, attach it to 47 and continue: 472 / 603

On to step 6:
When dividing 472 by 603, we get 0 with a remainder of 472.
Put 0 as the next digit of the answer. 
Result so far: 510.0
Deduct 0 from 472 and we're left with 472.
Take the next digit (4) from the dividend and append it to 472, then repeat: 4724 / 603

Moving on to step 7:
603 can be fit into 4724 7 times, resulting in a remainder of 503.
Put 7 as the next digit of the answer. 
Result so far: 5107.0
If we take 4221 away from 4724, we end up with 503.
Take the next digit (3) from the dividend and append it to 503, then repeat: 5033 / 603

Let's proceed to step 8:
The number 603 fits into 5033 8 times, leaving a remainder of 209.
The number 8 becomes the next digit in our result. 
Result so far: 51078.0
If we take 4824 away from 5033, we end up with 209.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2090, and continue the process.

Going ahead to step 9:
When dividing 2090 by 603, we get 3 with a remainder of 281.
Use 3 as the next digit of our solution. 
Result so far: 51078.3
The remainder is 281 after subtracting 1809 from 2090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

On to step 10:
603 goes into 2810 4 times with a remainder of 398.
Use 4 as the next digit of our solution. 
Result so far: 51078.34
If we subtract 2412 from 2810, we get 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Advancing to step 11:
The number 603 fits into 3980 6 times, leaving a remainder of 362.
The next digit of our result is 6. 
Result so far: 51078.346
If we take 3618 away from 3980, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 12:
When dividing 3620 by 603, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 51078.3466
Deduct 3618 from 3620 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 51078.3466 and a remainder of 2e-05.