823808 ÷ 90 
We want to figure out the number of times 823808 can be divided by 90.

On to step 1:
8 divided by 90 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (2) of the dividend behind the 8 and repeat the process: 82 / 90

Going ahead to step 2:
When dividing 82 by 90, we get 0 with a remainder of 82.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 82 leaves us with 82.
Fetch the next digit (3) from the dividend, attach it to 82 and continue: 823 / 90

Moving on to step 3:
90 goes into 823 9 times with a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 13 after subtracting 810 from 823.
Take the next digit (8) from the dividend and append it to 13, then repeat: 138 / 90

Advancing to step 4:
90 can be fit into 138 1 times, resulting in a remainder of 48.
The next digit of our result is 1. 
Result so far: 91.0
Subtract 90 from 138 to get 48.
Grab the next digit (0) from the dividend, add it to 48, then carry on: 480 / 90

On to step 5:
The number 90 fits into 480 5 times, leaving a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 915.0
If we take 450 away from 480, we end up with 30.
Bring next digit (8) of the dividend behind the 30 and repeat the process: 308 / 90

On to step 6:
90 can be fit into 308 3 times, resulting in a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 9153.0
Subtract 270 from 308 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 7:
If we divide 380 by 90, we get 4 and a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 9153.4
If we take 360 away from 380, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
90 goes into 200 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 9153.42
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
When dividing 200 by 90, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 9153.422
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final result is 9153.422 with a remainder of 0.002.