We divide 604287 by 20
Our goal is to divide 604287 by 20.

On to step 1:
6 divided by 20 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 20

Going ahead to step 2:
The number 20 fits into 60 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 60 away from 60, we end up with 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 20

Going ahead to step 3:
When dividing 4 by 20, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 20

Step 4:
When dividing 42 by 20, we get 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 302.0
If we take 40 away from 42, we end up with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 20

On to step 5:
When dividing 28 by 20, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 3021.0
Subtract 20 from 28 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 20

Moving on to step 6:
When dividing 87 by 20, we get 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 30214.0
The remainder is 7 after subtracting 80 from 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
70 divided by 20 is 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 30214.3
The remainder is 10 after subtracting 60 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 20 fits into 100 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 30214.35
Subtracting 100 from 100 leaves us 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.

Let's proceed to step 9:
20 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 30214.35
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 30214.35
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 outcome is 30214.35, with a leftover of 0.0.