We're dividing 580588 by 20 
Let's see how many times 20 fits into 580588.

Going ahead to step 1:
20 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 20

On to step 2:
If we divide 58 by 20, we get 2 and a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 40 from 58 leaves us with 18.
Append the next digit (0) from the dividend to 18 and continue with: 180 / 20

Moving on to step 3:
If we divide 180 by 20, we get 9 and a remainder of 0.
The next digit of our result is 9. 
Result so far: 29.0
The remainder is 0 after subtracting 180 from 180.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 20

Moving on to step 4:
20 can be fit into 5 0 times, resulting in a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 290.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 20

Going ahead to step 5:
20 can be fit into 58 2 times, resulting in a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 2902.0
If we take 40 away from 58, we end up with 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 20

Moving on to step 6:
20 can be fit into 188 9 times, resulting in a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 29029.0
Deduct 180 from 188 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
20 can be fit into 80 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 29029.4
Subtract 80 from 80 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 8:
When dividing 0 by 20, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 29029.4
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.

Going ahead to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 29029.4
Subtracting 0 from 0 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.

After the division, we end up with 29029.4 and a remainder of 0.0.