We're dividing 3668 by 18 
We're looking to find how many times 18 goes into 3668.

Going ahead to step 1:
If we divide 3 by 18, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 18

Moving on to step 2:
The number 18 fits into 36 2 times, leaving a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 36 from 36, we get 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 18

Moving on to step 3:
18 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 18

Going ahead to step 4:
When dividing 68 by 18, we get 3 with a remainder of 14.
Use 3 as the next digit of our solution. 
Result so far: 203.0
Subtracting 54 from 68 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 5:
18 goes into 140 7 times with a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 203.7
If we subtract 126 from 140, we 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.

Going ahead to step 6:
The number 18 fits into 140 7 times, leaving a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 203.77
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The final outcome is 203.77, with a leftover of 0.014.