We look at the division of 590402 by 20 
Let's see how many times 20 fits into 590402.

Going ahead to step 1:
20 can be fit into 5 0 times, resulting in a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 20

Step 2:
59 divided by 20 is 2 with a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 40 from 59, we get 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 20

Advancing to step 3:
190 divided by 20 is 9 with a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
Subtracting 180 from 190 leaves us with 10.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 20

Let's proceed to step 4:
20 can be fit into 104 5 times, resulting in a remainder of 4.
Put 5 as the next digit of the answer. 
Result so far: 295.0
Subtracting 100 from 104 leaves us with 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 20

Moving on to step 5:
If we divide 40 by 20, we get 2 and a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2952.0
If we subtract 40 from 40, we get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 20

Moving on to step 6:
When dividing 2 by 20, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 29520.0
Deduct 0 from 2 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.

Let's proceed to step 7:
The number 20 fits into 20 1 times, leaving a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 29520.1
If we subtract 20 from 20, we 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.

Advancing to step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 29520.1
If we subtract 0 from 0, we 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.

Advancing to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 29520.1
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 result is 29520.1 with a remainder of 0.0.