We divide 488512 by 90
We're looking to find how many times 90 goes into 488512.

Going ahead to step 1:
90 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 90

Let's proceed to step 2:
48 divided by 90 is 0 with a remainder of 48.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Take the next digit (8) from the dividend and append it to 48, then repeat: 488 / 90

Step 3:
90 goes into 488 5 times with a remainder of 38.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 450 from 488 leaves us with 38.
Include the next digit (5) from the dividend after 38, then repeat: 385 / 90

Advancing to step 4:
90 can be fit into 385 4 times, resulting in a remainder of 25.
Use 4 as the next digit of our solution. 
Result so far: 54.0
Deduct 360 from 385 and we're left with 25.
Fetch the next digit (1) from the dividend, attach it to 25 and continue: 251 / 90

On to step 5:
If we divide 251 by 90, we get 2 and a remainder of 71.
The number 2 becomes the next digit in our result. 
Result so far: 542.0
If we take 180 away from 251, we end up with 71.
Take the next digit (2) from the dividend and append it to 71, then repeat: 712 / 90

On to step 6:
If we divide 712 by 90, we get 7 and a remainder of 82.
The number 7 becomes the next digit in our result. 
Result so far: 5427.0
Subtracting 630 from 712 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 7:
The number 90 fits into 820 9 times, leaving a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 5427.9
Subtracting 810 from 820 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.

Advancing to step 8:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 5427.91
If we take 90 away from 100, we end up 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.

Let's proceed to step 9:
The number 90 fits into 100 1 times, leaving a remainder of 10.
Use 1 as the next digit of our solution. 
Result so far: 5427.911
Deduct 90 from 100 and we're left 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.

The final outcome is 5427.911, with a leftover of 0.001.