Let's divide 869007 by 90
We're looking to find how many times 90 goes into 869007.

Going ahead to step 1:
The number 90 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 90

Going ahead to step 2:
90 can be fit into 86 0 times, resulting in a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Take the next digit (9) from the dividend and append it to 86, then repeat: 869 / 90

Advancing to step 3:
869 divided by 90 is 9 with a remainder of 59.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 810 away from 869, we end up with 59.
Grab the next digit (0) from the dividend, add it to 59, then carry on: 590 / 90

Let's proceed to step 4:
If we divide 590 by 90, we get 6 and a remainder of 50.
The next digit of our result is 6. 
Result so far: 96.0
If we subtract 540 from 590, we get 50.
Fetch the next digit (0) from the dividend, attach it to 50 and continue: 500 / 90

Moving on to step 5:
500 divided by 90 is 5 with a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 965.0
If we subtract 450 from 500, we get 50.
Fetch the next digit (7) from the dividend, attach it to 50 and continue: 507 / 90

Step 6:
The number 90 fits into 507 5 times, leaving a remainder of 57.
Write down 5 as next digit of the result. 
Result so far: 9655.0
Deduct 450 from 507 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 7:
If we divide 570 by 90, we get 6 and a remainder of 30.
Use 6 as the next digit of our solution. 
Result so far: 9655.6
If we subtract 540 from 570, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
90 can be fit into 300 3 times, resulting in a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 9655.63
Subtract 270 from 300 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
90 can be fit into 300 3 times, resulting in a remainder of 30.
The next digit of our result is 3. 
Result so far: 9655.633
The remainder is 30 after subtracting 270 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Our division results in 9655.633 with a remaining 0.003.