487588 divided by 20 
We want to figure out the number of times 487588 can be divided by 20.

On to step 1:
4 divided by 20 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 20

Advancing to step 2:
If we divide 48 by 20, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 40 from 48, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 20

Advancing to step 3:
87 divided by 20 is 4 with a remainder of 7.
The next digit of our result is 4. 
Result so far: 24.0
Subtracting 80 from 87 leaves us with 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 20

Moving on to step 4:
The number 20 fits into 75 3 times, leaving a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 243.0
Subtract 60 from 75 to get 15.
Bring next digit (8) of the dividend behind the 15 and repeat the process: 158 / 20

Let's proceed to step 5:
When dividing 158 by 20, we get 7 with a remainder of 18.
Use 7 as the next digit of our solution. 
Result so far: 2437.0
Subtract 140 from 158 to get 18.
Append the next digit (8) from the dividend to 18 and continue with: 188 / 20

Advancing 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: 24379.0
Subtract 180 from 188 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
20 goes into 80 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 24379.4
If we take 80 away from 80, we end up 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:
If we divide 0 by 20, we get 0 and a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 24379.4
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.

Let's proceed to step 9:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 24379.4
If we take 0 away from 0, we end up 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 24379.4, with a leftover of 0.0.