670409 divided by 18 
Our goal is to divide 670409 by 18.

Step 1:
The number 18 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (7) from the dividend, add it to 6, then carry on: 67 / 18

Going ahead to step 2:
When dividing 67 by 18, we get 3 with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 54 away from 67, we end up with 13.
Grab the next digit (0) from the dividend, add it to 13, then carry on: 130 / 18

Going ahead to step 3:
18 goes into 130 7 times with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
If we subtract 126 from 130, we get 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 18

Going ahead to step 4:
44 divided by 18 is 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 372.0
The remainder is 8 after subtracting 36 from 44.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 18

Going ahead to step 5:
The number 18 fits into 80 4 times, leaving a remainder of 8.
The next digit of our result is 4. 
Result so far: 3724.0
Subtracting 72 from 80 leaves us with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 18

Advancing to step 6:
18 goes into 89 4 times with a remainder of 17.
Use 4 as the next digit of our solution. 
Result so far: 37244.0
If we subtract 72 from 89, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
18 goes into 170 9 times with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 37244.9
If we subtract 162 from 170, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
The number 18 fits into 80 4 times, leaving a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 37244.94
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
When dividing 80 by 18, we get 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 37244.944
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 37244.944 with a balance of 0.0008.