We look at the division of 909515 by 90 
Let's see how many times 90 fits into 909515.

Step 1:
If we divide 9 by 90, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 90

Advancing to step 2:
The number 90 fits into 90 1 times, leaving a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 90 from 90, we get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 90

Moving on to step 3:
If we divide 9 by 90, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 90

Moving on to step 4:
95 divided by 90 is 1 with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 101.0
Deduct 90 from 95 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 90

Moving on to step 5:
90 goes into 51 0 times with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 1010.0
If we take 0 away from 51, we end up with 51.
Include the next digit (5) from the dividend after 51, then repeat: 515 / 90

Advancing to step 6:
515 divided by 90 is 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 10105.0
Deduct 450 from 515 and we're left with 65.
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 7:
90 can be fit into 650 7 times, resulting in a remainder of 20.
The next digit of our result is 7. 
Result so far: 10105.7
Subtract 630 from 650 to 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.

Moving on to step 8:
The number 90 fits into 200 2 times, leaving a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 10105.72
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.

Step 9:
200 divided by 90 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 10105.722
Deduct 180 from 200 and we're left 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.

The final result is 10105.722 with a remainder of 0.002.