We look at the division of 99993999 by 310 
We want to figure out the number of times 99993999 can be divided by 310.

Going ahead to step 1:
When dividing 9 by 310, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 310

Let's proceed to step 2:
310 goes into 99 0 times with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Fetch the next digit (9) from the dividend, attach it to 99 and continue: 999 / 310

Going ahead to step 3:
310 can be fit into 999 3 times, resulting in a remainder of 69.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 930 from 999 leaves us with 69.
Grab the next digit (9) from the dividend, add it to 69, then carry on: 699 / 310

Advancing to step 4:
When dividing 699 by 310, we get 2 with a remainder of 79.
Use 2 as the next digit of our solution. 
Result so far: 32.0
If we subtract 620 from 699, we get 79.
Append the next digit (3) from the dividend to 79 and continue with: 793 / 310

Step 5:
310 can be fit into 793 2 times, resulting in a remainder of 173.
Write down 2 as next digit of the result. 
Result so far: 322.0
If we subtract 620 from 793, we get 173.
Fetch the next digit (9) from the dividend, attach it to 173 and continue: 1739 / 310

Step 6:
The number 310 fits into 1739 5 times, leaving a remainder of 189.
Use 5 as the next digit of our solution. 
Result so far: 3225.0
If we subtract 1550 from 1739, we get 189.
Grab the next digit (9) from the dividend, add it to 189, then carry on: 1899 / 310

Advancing to step 7:
310 can be fit into 1899 6 times, resulting in a remainder of 39.
The next digit of our result is 6. 
Result so far: 32256.0
Subtracting 1860 from 1899 leaves us with 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 310

Step 8:
310 goes into 399 1 times with a remainder of 89.
Write down 1 as next digit of the result. 
Result so far: 322561.0
Deduct 310 from 399 and we're left with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

On to step 9:
310 can be fit into 890 2 times, resulting in a remainder of 270.
The next digit of our result is 2. 
Result so far: 322561.2
If we subtract 620 from 890, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 10:
When dividing 2700 by 310, we get 8 with a remainder of 220.
Put 8 as the next digit of the answer. 
Result so far: 322561.28
If we subtract 2480 from 2700, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 11:
If we divide 2200 by 310, we get 7 and a remainder of 30.
Put 7 as the next digit of the answer. 
Result so far: 322561.287
The remainder is 30 after subtracting 2170 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
The number 310 fits into 300 0 times, leaving a remainder of 300.
Use 0 as the next digit of our solution. 
Result so far: 322561.287
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 13:
310 goes into 3000 9 times with a remainder of 210.
The next digit of our result is 9. 
Result so far: 322561.28709
If we take 2790 away from 3000, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 14:
310 goes into 2100 6 times with a remainder of 240.
Write down 6 as next digit of the result. 
Result so far: 322561.287096
Subtract 1860 from 2100 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 15:
310 can be fit into 2400 7 times, resulting in a remainder of 230.
The number 7 becomes the next digit in our result. 
Result so far: 322561.2870967
The remainder is 230 after subtracting 2170 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Moving on to step 16:
2300 divided by 310 is 7 with a remainder of 130.
Record the quotient 7 as the next digit in the result. 
Result so far: 322561.28709677
The remainder is 130 after subtracting 2170 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Our division results in 322561.28709677 with a remaining 1.3e-07.