451263 divided by 18 
Let's see how many times 18 fits into 451263.

Let's proceed to step 1:
4 divided by 18 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 18

Let's proceed to step 2:
18 goes into 45 2 times with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 36 from 45 leaves us with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 18

On to step 3:
91 divided by 18 is 5 with a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we take 90 away from 91, we end up with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 18

Going ahead to step 4:
If we divide 12 by 18, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 250.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 18

Let's proceed to step 5:
If we divide 126 by 18, we get 7 and a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 2507.0
Subtract 126 from 126 to get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 18

Advancing to step 6:
3 divided by 18 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 25070.0
Deduct 0 from 3 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
If we divide 30 by 18, we get 1 and a remainder of 12.
The next digit of our result is 1. 
Result so far: 25070.1
Deduct 18 from 30 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.

On to step 8:
18 can be fit into 120 6 times, resulting in a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 25070.16
If we take 108 away from 120, we end up 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.

Let's proceed to step 9:
If we divide 120 by 18, we get 6 and a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 25070.166
The remainder is 12 after subtracting 108 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 25070.166 and a remainder of 0.0012.