We divide 448532 by 90
We're looking to find how many times 90 goes into 448532.

Step 1:
If we divide 4 by 90, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 90

On to step 2:
The number 90 fits into 44 0 times, leaving a remainder of 44.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 44, we end up with 44.
Append the next digit (8) from the dividend to 44 and continue with: 448 / 90

Moving on to step 3:
448 divided by 90 is 4 with a remainder of 88.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 88 after subtracting 360 from 448.
Append the next digit (5) from the dividend to 88 and continue with: 885 / 90

Going ahead to step 4:
When dividing 885 by 90, we get 9 with a remainder of 75.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Subtract 810 from 885 to get 75.
Fetch the next digit (3) from the dividend, attach it to 75 and continue: 753 / 90

Step 5:
90 goes into 753 8 times with a remainder of 33.
The number 8 becomes the next digit in our result. 
Result so far: 498.0
If we subtract 720 from 753, we get 33.
Grab the next digit (2) from the dividend, add it to 33, then carry on: 332 / 90

Let's proceed to step 6:
If we divide 332 by 90, we get 3 and a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 4983.0
Deduct 270 from 332 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 7:
620 divided by 90 is 6 with a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 4983.6
If we take 540 away from 620, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 8:
When dividing 800 by 90, we get 8 with a remainder of 80.
Use 8 as the next digit of our solution. 
Result so far: 4983.68
Deduct 720 from 800 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 9:
90 can be fit into 800 8 times, resulting in a remainder of 80.
Write down 8 as next digit of the result. 
Result so far: 4983.688
If we subtract 720 from 800, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 4983.688 with a remainder of 0.008.