509520 ÷ 23 
Let's see how many times 23 fits into 509520.

Advancing to step 1:
23 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 23

Let's proceed to step 2:
23 goes into 50 2 times with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 46 from 50, we get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 23

Step 3:
23 goes into 49 2 times with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtract 46 from 49 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 23

Advancing to step 4:
The number 23 fits into 35 1 times, leaving a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 221.0
Subtracting 23 from 35 leaves us with 12.
Include the next digit (2) from the dividend after 12, then repeat: 122 / 23

Moving on to step 5:
The number 23 fits into 122 5 times, leaving a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 2215.0
The remainder is 7 after subtracting 115 from 122.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 23

Moving on to step 6:
When dividing 70 by 23, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 22153.0
Subtracting 69 from 70 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
The number 23 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 22153.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
23 can be fit into 100 4 times, resulting in a remainder of 8.
The next digit of our result is 4. 
Result so far: 22153.04
Subtract 92 from 100 to get 8.
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 9:
23 can be fit into 80 3 times, resulting in a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 22153.043
Deduct 69 from 80 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 10:
110 divided by 23 is 4 with a remainder of 18.
Record the quotient 4 as the next digit in the result. 
Result so far: 22153.0434
Deduct 92 from 110 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 11:
When dividing 180 by 23, we get 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 22153.04347
Subtracting 161 from 180 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.

Advancing to step 12:
When dividing 190 by 23, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 22153.043478
If we take 184 away from 190, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
If we divide 60 by 23, we get 2 and a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 22153.0434782
If we subtract 46 from 60, we get 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 14:
When dividing 140 by 23, we get 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 22153.04347826
The remainder is 2 after subtracting 138 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 22153.04347826 with a remainder of 2e-09.