We look at the division of 303624 by 90 
Let's see how many times 90 fits into 303624.

On to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 90

Going ahead to step 2:
90 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Take the next digit (3) from the dividend and append it to 30, then repeat: 303 / 90

On to step 3:
When dividing 303 by 90, we get 3 with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 270 from 303 and we're left with 33.
Include the next digit (6) from the dividend after 33, then repeat: 336 / 90

Advancing to step 4:
336 divided by 90 is 3 with a remainder of 66.
The next digit of our result is 3. 
Result so far: 33.0
Subtract 270 from 336 to get 66.
Append the next digit (2) from the dividend to 66 and continue with: 662 / 90

Moving on to step 5:
90 goes into 662 7 times with a remainder of 32.
Put 7 as the next digit of the answer. 
Result so far: 337.0
The remainder is 32 after subtracting 630 from 662.
Grab the next digit (4) from the dividend, add it to 32, then carry on: 324 / 90

On to step 6:
90 can be fit into 324 3 times, resulting in a remainder of 54.
Put 3 as the next digit of the answer. 
Result so far: 3373.0
Subtracting 270 from 324 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 7:
90 goes into 540 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 3373.6
Subtract 540 from 540 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
0 divided by 90 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 3373.6
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
90 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 3373.6
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 3373.6, and the remainder is 0.0.