We're dividing 840609 by 5 
Our goal is to divide 840609 by 5.

Advancing to step 1:
5 can be fit into 8 1 times, resulting in a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 5 from 8, we get 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 5

Let's proceed to step 2:
The number 5 fits into 34 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
The remainder is 4 after subtracting 30 from 34.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 5

On to step 3:
40 divided by 5 is 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 168.0
If we subtract 40 from 40, we get 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 5

Advancing to step 4:
5 can be fit into 6 1 times, resulting in a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 1681.0
If we take 5 away from 6, we end up with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 5

Advancing to step 5:
5 can be fit into 10 2 times, resulting in a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 16812.0
Subtract 10 from 10 to get 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 5

On to step 6:
The number 5 fits into 9 1 times, leaving a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 168121.0
If we take 5 away from 9, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
40 divided by 5 is 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 168121.8
If we subtract 40 from 40, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 168121.8
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
5 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 168121.8
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 168121.8 with a remaining 0.0.