799575 ÷ 90 
We're looking to find how many times 90 goes into 799575.

On to step 1:
7 divided by 90 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 90

Going ahead to step 2:
90 can be fit into 79 0 times, resulting in a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 79 and we're left with 79.
Include the next digit (9) from the dividend after 79, then repeat: 799 / 90

Advancing to step 3:
799 divided by 90 is 8 with a remainder of 79.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 720 away from 799, we end up with 79.
Take the next digit (5) from the dividend and append it to 79, then repeat: 795 / 90

Going ahead to step 4:
90 can be fit into 795 8 times, resulting in a remainder of 75.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
Deduct 720 from 795 and we're left with 75.
Include the next digit (7) from the dividend after 75, then repeat: 757 / 90

Step 5:
When dividing 757 by 90, we get 8 with a remainder of 37.
The number 8 becomes the next digit in our result. 
Result so far: 888.0
If we take 720 away from 757, we end up with 37.
Fetch the next digit (5) from the dividend, attach it to 37 and continue: 375 / 90

Moving on to step 6:
When dividing 375 by 90, we get 4 with a remainder of 15.
The next digit of our result is 4. 
Result so far: 8884.0
If we take 360 away from 375, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
90 goes into 150 1 times with a remainder of 60.
Record the quotient 1 as the next digit in the result. 
Result so far: 8884.1
Deduct 90 from 150 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 8:
When dividing 600 by 90, we get 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 8884.16
Subtracting 540 from 600 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 9:
90 goes into 600 6 times with a remainder of 60.
Record the quotient 6 as the next digit in the result. 
Result so far: 8884.166
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 8884.166, with a leftover of 0.006.