12316993 ÷ 309 
We want to divide 12316993 by 309.

Moving on to step 1:
309 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 309

Advancing to step 2:
When dividing 12 by 309, we get 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 309

On to step 3:
309 goes into 123 0 times with a remainder of 123.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 123 after subtracting 0 from 123.
Include the next digit (1) from the dividend after 123, then repeat: 1231 / 309

Going ahead to step 4:
The number 309 fits into 1231 3 times, leaving a remainder of 304.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 304 after subtracting 927 from 1231.
Fetch the next digit (6) from the dividend, attach it to 304 and continue: 3046 / 309

Step 5:
309 goes into 3046 9 times with a remainder of 265.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
The remainder is 265 after subtracting 2781 from 3046.
Take the next digit (9) from the dividend and append it to 265, then repeat: 2659 / 309

Moving on to step 6:
309 goes into 2659 8 times with a remainder of 187.
The number 8 becomes the next digit in our result. 
Result so far: 398.0
If we take 2472 away from 2659, we end up with 187.
Grab the next digit (9) from the dividend, add it to 187, then carry on: 1879 / 309

Moving on to step 7:
309 goes into 1879 6 times with a remainder of 25.
The next digit of our result is 6. 
Result so far: 3986.0
If we subtract 1854 from 1879, we get 25.
Take the next digit (3) from the dividend and append it to 25, then repeat: 253 / 309

Let's proceed to step 8:
309 goes into 253 0 times with a remainder of 253.
Put 0 as the next digit of the answer. 
Result so far: 39860.0
Subtract 0 from 253 to get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

On to step 9:
2530 divided by 309 is 8 with a remainder of 58.
Put 8 as the next digit of the answer. 
Result so far: 39860.8
Subtracting 2472 from 2530 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 10:
When dividing 580 by 309, we get 1 with a remainder of 271.
Write down 1 as next digit of the result. 
Result so far: 39860.81
If we take 309 away from 580, we end up with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Moving on to step 11:
2710 divided by 309 is 8 with a remainder of 238.
Use 8 as the next digit of our solution. 
Result so far: 39860.818
If we take 2472 away from 2710, we end up with 238.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2380, and continue the process.

Going ahead to step 12:
The number 309 fits into 2380 7 times, leaving a remainder of 217.
Record the quotient 7 as the next digit in the result. 
Result so far: 39860.8187
The remainder is 217 after subtracting 2163 from 2380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Step 13:
2170 divided by 309 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 39860.81877
The remainder is 7 after subtracting 2163 from 2170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

The final outcome is 39860.81877, with a leftover of 7e-06.