We're dividing 423501 by 23 
We want to figure out the number of times 423501 can be divided by 23.

On to step 1:
If we divide 4 by 23, we get 0 and a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 23

Moving on to step 2:
If we divide 42 by 23, we get 1 and a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 19 after subtracting 23 from 42.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 23

Advancing to step 3:
When dividing 193 by 23, we get 8 with a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 18.0
The remainder is 9 after subtracting 184 from 193.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 23

Let's proceed to step 4:
When dividing 95 by 23, we get 4 with a remainder of 3.
Record the quotient 4 as the next digit in the result. 
Result so far: 184.0
The remainder is 3 after subtracting 92 from 95.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 23

Let's proceed to step 5:
23 goes into 30 1 times with a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1841.0
The remainder is 7 after subtracting 23 from 30.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 23

Advancing to step 6:
23 can be fit into 71 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 18413.0
Subtract 69 from 71 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.

On to step 7:
When dividing 20 by 23, we get 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 18413.0
If we subtract 0 from 20, we 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.

Advancing to step 8:
When dividing 200 by 23, we get 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 18413.08
Subtracting 184 from 200 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
If we divide 160 by 23, we get 6 and a remainder of 22.
The next digit of our result is 6. 
Result so far: 18413.086
Deduct 138 from 160 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 10:
The number 23 fits into 220 9 times, leaving a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 18413.0869
Deduct 207 from 220 and we're left 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.

On to step 11:
When dividing 130 by 23, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 18413.08695
If we subtract 115 from 130, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 12:
23 goes into 150 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 18413.086956
Deduct 138 from 150 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 13:
120 divided by 23 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 18413.0869565
If we subtract 115 from 120, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 14:
The number 23 fits into 50 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 18413.08695652
Subtract 46 from 50 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 18413.08695652 with a remainder of 4e-09.