We're dividing 668456 by 18 
We're looking to find how many times 18 goes into 668456.

Step 1:
When dividing 6 by 18, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 18

Let's proceed to step 2:
66 divided by 18 is 3 with a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 54 away from 66, we end up with 12.
Bring next digit (8) of the dividend behind the 12 and repeat the process: 128 / 18

Step 3:
If we divide 128 by 18, we get 7 and a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 37.0
If we subtract 126 from 128, we get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 18

Moving on to step 4:
18 can be fit into 24 1 times, resulting in a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 371.0
If we take 18 away from 24, we end up with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 18

Step 5:
18 goes into 65 3 times with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 3713.0
If we take 54 away from 65, we end up with 11.
Fetch the next digit (6) from the dividend, attach it to 11 and continue: 116 / 18

Going ahead to step 6:
18 can be fit into 116 6 times, resulting in a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 37136.0
The remainder is 8 after subtracting 108 from 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
18 can be fit into 80 4 times, resulting in a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 37136.4
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
80 divided by 18 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 37136.44
If we take 72 away from 80, we end up 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.

The quotient of the division is 37136.44, and the remainder is 0.008.