90000309 divided by 31 
Our goal is to divide 90000309 by 31.

Going ahead to step 1:
9 divided by 31 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 31

Advancing to step 2:
31 goes into 90 2 times with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 62 from 90 to get 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 31

Step 3:
When dividing 280 by 31, we get 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 29.0
Subtracting 279 from 280 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 31

Moving on to step 4:
31 goes into 10 0 times with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 290.0
If we take 0 away from 10, we end up with 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 31

Advancing to step 5:
100 divided by 31 is 3 with a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 2903.0
Deduct 93 from 100 and we're left with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 31

Moving on to step 6:
The number 31 fits into 73 2 times, leaving a remainder of 11.
The next digit of our result is 2. 
Result so far: 29032.0
The remainder is 11 after subtracting 62 from 73.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 31

Let's proceed to step 7:
110 divided by 31 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 290323.0
Deduct 93 from 110 and we're left with 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 31

Moving on to step 8:
179 divided by 31 is 5 with a remainder of 24.
The next digit of our result is 5. 
Result so far: 2903235.0
If we subtract 155 from 179, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 9:
31 can be fit into 240 7 times, resulting in a remainder of 23.
Write down 7 as next digit of the result. 
Result so far: 2903235.7
Deduct 217 from 240 and we're left with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 10:
230 divided by 31 is 7 with a remainder of 13.
Write down 7 as next digit of the result. 
Result so far: 2903235.77
If we take 217 away from 230, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Our division results in 2903235.77 with a remaining 0.013.