We look at the division of 804520 by 90 
We want to divide 804520 by 90.

Let's proceed to step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 90

Step 2:
90 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Fetch the next digit (4) from the dividend, attach it to 80 and continue: 804 / 90

On to step 3:
When dividing 804 by 90, we get 8 with a remainder of 84.
Put 8 as the next digit of the answer. 
Result so far: 8.0
The remainder is 84 after subtracting 720 from 804.
Include the next digit (5) from the dividend after 84, then repeat: 845 / 90

Going ahead to step 4:
845 divided by 90 is 9 with a remainder of 35.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
Deduct 810 from 845 and we're left with 35.
Take the next digit (2) from the dividend and append it to 35, then repeat: 352 / 90

Moving on to step 5:
90 can be fit into 352 3 times, resulting in a remainder of 82.
Use 3 as the next digit of our solution. 
Result so far: 893.0
If we take 270 away from 352, we end up with 82.
Append the next digit (0) from the dividend to 82 and continue with: 820 / 90

Moving on to step 6:
820 divided by 90 is 9 with a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 8939.0
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.

Moving on to step 7:
90 can be fit into 100 1 times, resulting in a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 8939.1
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
90 goes into 100 1 times with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 8939.11
Subtracting 90 from 100 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.

The final result is 8939.11 with a remainder of 0.01.