Let's divide 668189 by 18
We want to divide 668189 by 18.

On to step 1:
The number 18 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 18

On to step 2:
66 divided by 18 is 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 54 away from 66, we end up with 12.
Fetch the next digit (8) from the dividend, attach it to 12 and continue: 128 / 18

Moving on to step 3:
If we divide 128 by 18, we get 7 and a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 126 from 128 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 18

Moving on to step 4:
The number 18 fits into 21 1 times, leaving a remainder of 3.
The next digit of our result is 1. 
Result so far: 371.0
Deduct 18 from 21 and we're left with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 18

On to step 5:
If we divide 38 by 18, we get 2 and a remainder of 2.
The next digit of our result is 2. 
Result so far: 3712.0
If we take 36 away from 38, we end up with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 18

Advancing to step 6:
The number 18 fits into 29 1 times, leaving a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 37121.0
Subtracting 18 from 29 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 7:
110 divided by 18 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 37121.6
The remainder is 2 after subtracting 108 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 8:
The number 18 fits into 20 1 times, leaving a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 37121.61
If we subtract 18 from 20, we 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.

On to step 9:
18 goes into 20 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 37121.611
Subtract 18 from 20 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.

In conclusion, the division gives 37121.611 with a balance of 0.0002.