Let's divide 300455 by 18
We want to divide 300455 by 18.

Moving on to step 1:
18 goes into 3 0 times with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 18

Step 2:
30 divided by 18 is 1 with a remainder of 12.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 18 from 30 leaves us with 12.
Bring next digit (0) of the dividend behind the 12 and repeat the process: 120 / 18

On to step 3:
The number 18 fits into 120 6 times, leaving a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we subtract 108 from 120, we get 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 18

On to step 4:
124 divided by 18 is 6 with a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 166.0
The remainder is 16 after subtracting 108 from 124.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 18

Step 5:
The number 18 fits into 165 9 times, leaving a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 1669.0
Deduct 162 from 165 and we're left with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 18

Advancing to step 6:
35 divided by 18 is 1 with a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 16691.0
Subtracting 18 from 35 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
If we divide 170 by 18, we get 9 and a remainder of 8.
Put 9 as the next digit of the answer. 
Result so far: 16691.9
If we subtract 162 from 170, we 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.

Step 8:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 16691.94
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 16691.944
Subtract 72 from 80 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.

After the division, we end up with 16691.944 and a remainder of 0.0008.