840831 ÷ 18 
Our goal is to divide 840831 by 18.

Going ahead to step 1:
When dividing 8 by 18, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (4) from the dividend after 8, then repeat: 84 / 18

Step 2:
When dividing 84 by 18, we get 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 72 from 84 and we're left with 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 18

Let's proceed to step 3:
120 divided by 18 is 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 46.0
If we subtract 108 from 120, we get 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 18

On to step 4:
If we divide 128 by 18, we get 7 and a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 467.0
If we take 126 away from 128, we end up with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 18

Let's proceed to step 5:
When dividing 23 by 18, we get 1 with a remainder of 5.
Write down 1 as next digit of the result. 
Result so far: 4671.0
If we subtract 18 from 23, we get 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 18

Moving on to step 6:
18 can be fit into 51 2 times, resulting in a remainder of 15.
The number 2 becomes the next digit in our result. 
Result so far: 46712.0
Deduct 36 from 51 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
When dividing 150 by 18, we get 8 with a remainder of 6.
The next digit of our result is 8. 
Result so far: 46712.8
If we take 144 away from 150, we end up 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.

Advancing to step 8:
If we divide 60 by 18, we get 3 and a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 46712.83
The remainder is 6 after subtracting 54 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 9:
The number 18 fits into 60 3 times, leaving a remainder of 6.
Record the quotient 3 as the next digit in the result. 
Result so far: 46712.833
If we subtract 54 from 60, we 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.

In conclusion, the division gives 46712.833 with a balance of 0.0006.