We look at the division of 869107 by 90 
Let's see how many times 90 fits into 869107.

On to step 1:
90 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 90

Let's proceed to step 2:
The number 90 fits into 86 0 times, leaving a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Fetch the next digit (9) from the dividend, attach it to 86 and continue: 869 / 90

On to step 3:
The number 90 fits into 869 9 times, leaving a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Subtract 810 from 869 to get 59.
Include the next digit (1) from the dividend after 59, then repeat: 591 / 90

Step 4:
591 divided by 90 is 6 with a remainder of 51.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
Subtract 540 from 591 to get 51.
Include the next digit (0) from the dividend after 51, then repeat: 510 / 90

Let's proceed to step 5:
90 goes into 510 5 times with a remainder of 60.
Put 5 as the next digit of the answer. 
Result so far: 965.0
If we take 450 away from 510, we end up with 60.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 90

Let's proceed to step 6:
If we divide 607 by 90, we get 6 and a remainder of 67.
Write down 6 as next digit of the result. 
Result so far: 9656.0
If we subtract 540 from 607, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 7:
The number 90 fits into 670 7 times, leaving a remainder of 40.
The next digit of our result is 7. 
Result so far: 9656.7
Deduct 630 from 670 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 8:
When dividing 400 by 90, we get 4 with a remainder of 40.
Write down 4 as next digit of the result. 
Result so far: 9656.74
If we take 360 away from 400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
90 can be fit into 400 4 times, resulting in a remainder of 40.
The number 4 becomes the next digit in our result. 
Result so far: 9656.744
If we subtract 360 from 400, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 9656.744, and the remainder is 0.004.