12645311 ÷ 23 
We're looking to find how many times 23 goes into 12645311.

Step 1:
23 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 23

Let's proceed to step 2:
When dividing 12 by 23, we get 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 23

Let's proceed to step 3:
23 can be fit into 126 5 times, resulting in a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 115 from 126, we get 11.
Append the next digit (4) from the dividend to 11 and continue with: 114 / 23

Moving on to step 4:
If we divide 114 by 23, we get 4 and a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 54.0
Subtracting 92 from 114 leaves us with 22.
Grab the next digit (5) from the dividend, add it to 22, then carry on: 225 / 23

Going ahead to step 5:
The number 23 fits into 225 9 times, leaving a remainder of 18.
Write down 9 as next digit of the result. 
Result so far: 549.0
Deduct 207 from 225 and we're left with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 23

Moving on to step 6:
183 divided by 23 is 7 with a remainder of 22.
The next digit of our result is 7. 
Result so far: 5497.0
If we subtract 161 from 183, we get 22.
Take the next digit (1) from the dividend and append it to 22, then repeat: 221 / 23

On to step 7:
23 goes into 221 9 times with a remainder of 14.
Record the quotient 9 as the next digit in the result. 
Result so far: 54979.0
Subtracting 207 from 221 leaves us with 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 23

On to step 8:
If we divide 141 by 23, we get 6 and a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 549796.0
The remainder is 3 after subtracting 138 from 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
23 goes into 30 1 times with a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 549796.1
Subtract 23 from 30 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 10:
The number 23 fits into 70 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 549796.13
Subtract 69 from 70 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
When dividing 10 by 23, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 549796.13
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
100 divided by 23 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 549796.1304
The remainder is 8 after subtracting 92 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 13:
The number 23 fits into 80 3 times, leaving a remainder of 11.
The next digit of our result is 3. 
Result so far: 549796.13043
If we subtract 69 from 80, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 14:
23 can be fit into 110 4 times, resulting in a remainder of 18.
Put 4 as the next digit of the answer. 
Result so far: 549796.130434
Subtract 92 from 110 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 15:
The number 23 fits into 180 7 times, leaving a remainder of 19.
Write down 7 as next digit of the result. 
Result so far: 549796.1304347
Deduct 161 from 180 and we're left 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.

Moving on to step 16:
23 can be fit into 190 8 times, resulting in a remainder of 6.
The next digit of our result is 8. 
Result so far: 549796.13043478
Subtract 184 from 190 to 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.

The final result is 549796.13043478 with a remainder of 6e-09.