Let's divide 859304 by 90
We're looking to find how many times 90 goes into 859304.

Going ahead to step 1:
If we divide 8 by 90, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 90

Moving on to step 2:
90 goes into 85 0 times with a remainder of 85.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Include the next digit (9) from the dividend after 85, then repeat: 859 / 90

Step 3:
The number 90 fits into 859 9 times, leaving a remainder of 49.
The next digit of our result is 9. 
Result so far: 9.0
If we take 810 away from 859, we end up with 49.
Append the next digit (3) from the dividend to 49 and continue with: 493 / 90

Going ahead to step 4:
If we divide 493 by 90, we get 5 and a remainder of 43.
Use 5 as the next digit of our solution. 
Result so far: 95.0
Subtract 450 from 493 to get 43.
Fetch the next digit (0) from the dividend, attach it to 43 and continue: 430 / 90

Advancing to step 5:
The number 90 fits into 430 4 times, leaving a remainder of 70.
Write down 4 as next digit of the result. 
Result so far: 954.0
Deduct 360 from 430 and we're left with 70.
Fetch the next digit (4) from the dividend, attach it to 70 and continue: 704 / 90

Going ahead to step 6:
The number 90 fits into 704 7 times, leaving a remainder of 74.
Use 7 as the next digit of our solution. 
Result so far: 9547.0
If we subtract 630 from 704, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 7:
The number 90 fits into 740 8 times, leaving a remainder of 20.
The next digit of our result is 8. 
Result so far: 9547.8
The remainder is 20 after subtracting 720 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
Use 2 as the next digit of our solution. 
Result so far: 9547.82
If we take 180 away from 200, we end up 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.

Going ahead to step 9:
If we divide 200 by 90, we get 2 and a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 9547.822
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.

After the division, we end up with 9547.822 and a remainder of 0.002.