304931 divided by 90 
Let's see how many times 90 fits into 304931.

Going ahead to step 1:
If we divide 3 by 90, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 90

On to step 2:
If we divide 30 by 90, we get 0 and a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Take the next digit (4) from the dividend and append it to 30, then repeat: 304 / 90

Advancing to step 3:
304 divided by 90 is 3 with a remainder of 34.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtract 270 from 304 to get 34.
Grab the next digit (9) from the dividend, add it to 34, then carry on: 349 / 90

Advancing to step 4:
If we divide 349 by 90, we get 3 and a remainder of 79.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we take 270 away from 349, we end up with 79.
Grab the next digit (3) from the dividend, add it to 79, then carry on: 793 / 90

Moving on to step 5:
90 can be fit into 793 8 times, resulting in a remainder of 73.
Record the quotient 8 as the next digit in the result. 
Result so far: 338.0
If we take 720 away from 793, we end up with 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 90

Step 6:
If we divide 731 by 90, we get 8 and a remainder of 11.
The next digit of our result is 8. 
Result so far: 3388.0
Deduct 720 from 731 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
If we divide 110 by 90, we get 1 and a remainder of 20.
The next digit of our result is 1. 
Result so far: 3388.1
If we subtract 90 from 110, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
200 divided by 90 is 2 with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 3388.12
Subtracting 180 from 200 leaves us 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.

On to step 9:
90 goes into 200 2 times with a remainder of 20.
The next digit of our result is 2. 
Result so far: 3388.122
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The final outcome is 3388.122, with a leftover of 0.002.