686009 ÷ 18 
Let's see how many times 18 fits into 686009.

On to step 1:
The number 18 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 18

Step 2:
18 goes into 68 3 times with a remainder of 14.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 14 after subtracting 54 from 68.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 18

Advancing to step 3:
18 goes into 146 8 times with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 38.0
Deduct 144 from 146 and we're left with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 18

Going ahead to step 4:
18 goes into 20 1 times with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 381.0
Subtract 18 from 20 to get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 18

Moving on to step 5:
18 goes into 20 1 times with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 3811.0
Subtracting 18 from 20 leaves us with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 18

Step 6:
18 can be fit into 29 1 times, resulting in a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 38111.0
Deduct 18 from 29 and we're left 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.

Going ahead to step 7:
The number 18 fits into 110 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 38111.6
Subtracting 108 from 110 leaves us 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.

Step 8:
When dividing 20 by 18, we get 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 38111.61
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.

Let's proceed to step 9:
The number 18 fits into 20 1 times, leaving a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 38111.611
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.

Our division results in 38111.611 with a remaining 0.0002.