603310 divided by 20 
Our goal is to divide 603310 by 20.

Moving on to step 1:
When dividing 6 by 20, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 20

Let's proceed to step 2:
20 goes into 60 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Deduct 60 from 60 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 20

Going ahead to step 3:
20 goes into 3 0 times with a remainder of 3.
The next digit of our result is 0. 
Result so far: 30.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 20

Let's proceed to step 4:
20 can be fit into 33 1 times, resulting in a remainder of 13.
Use 1 as the next digit of our solution. 
Result so far: 301.0
The remainder is 13 after subtracting 20 from 33.
Grab the next digit (1) from the dividend, add it to 13, then carry on: 131 / 20

On to step 5:
131 divided by 20 is 6 with a remainder of 11.
Put 6 as the next digit of the answer. 
Result so far: 3016.0
If we subtract 120 from 131, we get 11.
Grab the next digit (0) from the dividend, add it to 11, then carry on: 110 / 20

Let's proceed to step 6:
If we divide 110 by 20, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 30165.0
Subtracting 100 from 110 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 7:
20 can be fit into 100 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 30165.5
Deduct 100 from 100 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.

Advancing to step 8:
20 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 30165.5
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.

On to step 9:
20 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 30165.5
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.

Our division results in 30165.5 with a remaining 0.0.