451358 ÷ 23 
We're looking to find how many times 23 goes into 451358.

Let's proceed to step 1:
The number 23 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 23

Advancing to step 2:
If we divide 45 by 23, we get 1 and a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 23 from 45 to get 22.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 23

Step 3:
221 divided by 23 is 9 with a remainder of 14.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Subtracting 207 from 221 leaves us with 14.
Append the next digit (3) from the dividend to 14 and continue with: 143 / 23

On to step 4:
The number 23 fits into 143 6 times, leaving a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 196.0
Deduct 138 from 143 and we're left with 5.
Fetch the next digit (5) from the dividend, attach it to 5 and continue: 55 / 23

Let's proceed to step 5:
If we divide 55 by 23, we get 2 and a remainder of 9.
Put 2 as the next digit of the answer. 
Result so far: 1962.0
Deduct 46 from 55 and we're left with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 23

On to step 6:
The number 23 fits into 98 4 times, leaving a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 19624.0
Subtract 92 from 98 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.

On to step 7:
60 divided by 23 is 2 with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 19624.2
Subtract 46 from 60 to 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.

On to step 8:
When dividing 140 by 23, we get 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 19624.26
If we take 138 away from 140, we end up with 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 9:
20 divided by 23 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 19624.26
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.

Advancing to step 10:
When dividing 200 by 23, we get 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 19624.2608
If we subtract 184 from 200, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
The number 23 fits into 160 6 times, leaving a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 19624.26086
If we subtract 138 from 160, we 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 12:
23 can be fit into 220 9 times, resulting in a remainder of 13.
The number 9 becomes the next digit in our result. 
Result so far: 19624.260869
If we subtract 207 from 220, we get 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 13:
23 goes into 130 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 19624.2608695
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 14:
If we divide 150 by 23, we get 6 and a remainder of 12.
The next digit of our result is 6. 
Result so far: 19624.26086956
Subtract 138 from 150 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 19624.26086956, with a leftover of 1.2e-08.