We're dividing 79578875 by 90 
We want to divide 79578875 by 90.

Let's proceed to step 1:
When dividing 7 by 90, we get 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.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 90

Step 2:
If we divide 79 by 90, we get 0 and a remainder of 79.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 79, we end up with 79.
Grab the next digit (5) from the dividend, add it to 79, then carry on: 795 / 90

On to step 3:
The number 90 fits into 795 8 times, leaving a remainder of 75.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 720 from 795 to get 75.
Grab the next digit (7) from the dividend, add it to 75, then carry on: 757 / 90

Advancing to step 4:
If we divide 757 by 90, we get 8 and a remainder of 37.
The next digit of our result is 8. 
Result so far: 88.0
Deduct 720 from 757 and we're left with 37.
Take the next digit (8) from the dividend and append it to 37, then repeat: 378 / 90

On to step 5:
378 divided by 90 is 4 with a remainder of 18.
The next digit of our result is 4. 
Result so far: 884.0
Subtract 360 from 378 to get 18.
Fetch the next digit (8) from the dividend, attach it to 18 and continue: 188 / 90

Moving on to step 6:
188 divided by 90 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 8842.0
If we take 180 away from 188, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 90

Moving on to step 7:
If we divide 87 by 90, we get 0 and a remainder of 87.
The next digit of our result is 0. 
Result so far: 88420.0
If we subtract 0 from 87, we get 87.
Include the next digit (5) from the dividend after 87, then repeat: 875 / 90

Let's proceed to step 8:
If we divide 875 by 90, we get 9 and a remainder of 65.
Use 9 as the next digit of our solution. 
Result so far: 884209.0
The remainder is 65 after subtracting 810 from 875.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 9:
650 divided by 90 is 7 with a remainder of 20.
Put 7 as the next digit of the answer. 
Result so far: 884209.7
If we subtract 630 from 650, 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.

On to step 10:
The number 90 fits into 200 2 times, leaving a remainder of 20.
The next digit of our result is 2. 
Result so far: 884209.72
Subtracting 180 from 200 leaves us 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.

Let's proceed to step 11:
200 divided by 90 is 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 884209.722
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 outcome is 884209.722, with a leftover of 0.002.