We're dividing 18866 by 6 
Let's see how many times 6 fits into 18866.

Advancing to step 1:
When dividing 1 by 6, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 6

Let's proceed to step 2:
The number 6 fits into 18 3 times, leaving a remainder of 0.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 0 after subtracting 18 from 18.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 6

Going ahead to step 3:
If we divide 8 by 6, we get 1 and a remainder of 2.
The next digit of our result is 1. 
Result so far: 31.0
The remainder is 2 after subtracting 6 from 8.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 6

Moving on to step 4:
26 divided by 6 is 4 with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 314.0
If we take 24 away from 26, we end up with 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 6

Let's proceed to step 5:
6 can be fit into 26 4 times, resulting in a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 3144.0
If we subtract 24 from 26, 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.

Step 6:
When dividing 20 by 6, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 3144.3
If we take 18 away from 20, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
6 can be fit into 20 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 3144.33
The remainder is 2 after subtracting 18 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 3144.33 with a remainder of 0.002.