We divide 302559 by 90
We're looking to find how many times 90 goes into 302559.

Going ahead to step 1:
The number 90 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 90

Going ahead to step 2:
30 divided by 90 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Bring next digit (2) of the dividend behind the 30 and repeat the process: 302 / 90

Step 3:
90 can be fit into 302 3 times, resulting in a remainder of 32.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 270 from 302 leaves us with 32.
Include the next digit (5) from the dividend after 32, then repeat: 325 / 90

Going ahead to step 4:
325 divided by 90 is 3 with a remainder of 55.
Use 3 as the next digit of our solution. 
Result so far: 33.0
Subtract 270 from 325 to get 55.
Fetch the next digit (5) from the dividend, attach it to 55 and continue: 555 / 90

Advancing to step 5:
90 can be fit into 555 6 times, resulting in a remainder of 15.
Write down 6 as next digit of the result. 
Result so far: 336.0
Subtract 540 from 555 to get 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 90

On to step 6:
If we divide 159 by 90, we get 1 and a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 3361.0
Deduct 90 from 159 and we're left with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 7:
The number 90 fits into 690 7 times, leaving a remainder of 60.
The number 7 becomes the next digit in our result. 
Result so far: 3361.7
If we subtract 630 from 690, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
If we divide 600 by 90, we get 6 and a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 3361.76
If we subtract 540 from 600, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
When dividing 600 by 90, we get 6 with a remainder of 60.
The next digit of our result is 6. 
Result so far: 3361.766
If we take 540 away from 600, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 3361.766, with a leftover of 0.006.