407688 divided by 18 
Let's see how many times 18 fits into 407688.

Step 1:
The number 18 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 18

Let's proceed to step 2:
If we divide 40 by 18, we get 2 and a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 36 away from 40, we end up with 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 18

Advancing to step 3:
When dividing 47 by 18, we get 2 with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
Subtract 36 from 47 to get 11.
Bring next digit (6) of the dividend behind the 11 and repeat the process: 116 / 18

Going ahead to step 4:
116 divided by 18 is 6 with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 226.0
Subtracting 108 from 116 leaves us with 8.
Append the next digit (8) from the dividend to 8 and continue with: 88 / 18

Let's proceed to step 5:
If we divide 88 by 18, we get 4 and a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 2264.0
The remainder is 16 after subtracting 72 from 88.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 18

On to step 6:
If we divide 168 by 18, we get 9 and a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 22649.0
Subtract 162 from 168 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
60 divided by 18 is 3 with a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 22649.3
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
18 can be fit into 60 3 times, resulting in a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 22649.33
Deduct 54 from 60 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

After the division, we end up with 22649.33 and a remainder of 0.006.