We look at the division of 309576 by 23 
Let's see how many times 23 fits into 309576.

Advancing to step 1:
3 divided by 23 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 23

Going ahead to step 2:
30 divided by 23 is 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 23 from 30 and we're left with 7.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 23

Let's proceed to step 3:
If we divide 79 by 23, we get 3 and a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 69 from 79 leaves us with 10.
Fetch the next digit (5) from the dividend, attach it to 10 and continue: 105 / 23

Let's proceed to step 4:
23 can be fit into 105 4 times, resulting in a remainder of 13.
The next digit of our result is 4. 
Result so far: 134.0
If we take 92 away from 105, we end up with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 23

Step 5:
If we divide 137 by 23, we get 5 and a remainder of 22.
The next digit of our result is 5. 
Result so far: 1345.0
Subtract 115 from 137 to get 22.
Bring next digit (6) of the dividend behind the 22 and repeat the process: 226 / 23

Let's proceed to step 6:
If we divide 226 by 23, we get 9 and a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 13459.0
Subtracting 207 from 226 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
When dividing 190 by 23, we get 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 13459.8
If we subtract 184 from 190, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 8:
23 can be fit into 60 2 times, resulting in a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 13459.82
If we take 46 away from 60, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 9:
23 goes into 140 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 13459.826
Subtract 138 from 140 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 10:
When dividing 20 by 23, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 13459.826
Subtract 0 from 20 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.

Let's proceed to step 11:
23 can be fit into 200 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 13459.82608
The remainder is 16 after subtracting 184 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 12:
When dividing 160 by 23, we get 6 with a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 13459.826086
Subtract 138 from 160 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
23 goes into 220 9 times with a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 13459.8260869
Subtracting 207 from 220 leaves us 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.

Going ahead to step 14:
23 goes into 130 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 13459.82608695
Subtracting 115 from 130 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

After the division, we end up with 13459.82608695 and a remainder of 1.5e-08.