434580 ÷ 23 
We want to figure out the number of times 434580 can be divided by 23.

On to step 1:
23 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 23

Step 2:
23 can be fit into 43 1 times, resulting in a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 23 away from 43, we end up with 20.
Take the next digit (4) from the dividend and append it to 20, then repeat: 204 / 23

Let's proceed to step 3:
23 can be fit into 204 8 times, resulting in a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 18.0
The remainder is 20 after subtracting 184 from 204.
Append the next digit (5) from the dividend to 20 and continue with: 205 / 23

Moving on to step 4:
When dividing 205 by 23, we get 8 with a remainder of 21.
Write down 8 as next digit of the result. 
Result so far: 188.0
Subtracting 184 from 205 leaves us with 21.
Bring next digit (8) of the dividend behind the 21 and repeat the process: 218 / 23

Step 5:
If we divide 218 by 23, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 1889.0
Deduct 207 from 218 and we're left with 11.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 23

Advancing to step 6:
23 goes into 110 4 times with a remainder of 18.
The next digit of our result is 4. 
Result so far: 18894.0
Subtracting 92 from 110 leaves us 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.

Let's proceed to step 7:
180 divided by 23 is 7 with a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 18894.7
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.

Going ahead to step 8:
When dividing 190 by 23, we get 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 18894.78
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.

On to step 9:
The number 23 fits into 60 2 times, leaving a remainder of 14.
Put 2 as the next digit of the answer. 
Result so far: 18894.782
The remainder is 14 after subtracting 46 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 10:
23 goes into 140 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 18894.7826
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.

Moving on to step 11:
23 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 18894.7826
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 12:
23 can be fit into 200 8 times, resulting in a remainder of 16.
Write down 8 as next digit of the result. 
Result so far: 18894.782608
If we take 184 away from 200, we end up 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.

On to step 13:
If we divide 160 by 23, we get 6 and a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 18894.7826086
If we take 138 away from 160, we end up 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.

Going ahead to step 14:
If we divide 220 by 23, we get 9 and a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 18894.78260869
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.

The final result is 18894.78260869 with a remainder of 1.3e-08.