840880 ÷ 2 
Let's see how many times 2 fits into 840880.

Moving on to step 1:
When dividing 8 by 2, we get 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 8 from 8 to get 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 2

Going ahead to step 2:
4 divided by 2 is 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we subtract 4 from 4, we get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 2

On to step 3:
When dividing 0 by 2, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 420.0
Subtracting 0 from 0 leaves us with 0.
Fetch the next digit (8) from the dividend, attach it to 0 and continue: 8 / 2

Step 4:
2 can be fit into 8 4 times, resulting in a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 4204.0
If we subtract 8 from 8, we get 0.
Append the next digit (8) from the dividend to 0 and continue with: 8 / 2

Moving on to step 5:
2 goes into 8 4 times with a remainder of 0.
Use 4 as the next digit of our solution. 
Result so far: 42044.0
The remainder is 0 after subtracting 8 from 8.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 2

Let's proceed to step 6:
The number 2 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 420440.0
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.

Step 7:
When dividing 0 by 2, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 420440.0
Subtract 0 from 0 to 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.

Let's proceed to step 8:
If we divide 0 by 2, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 420440.0
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.

The final outcome is 420440.0, with a leftover of 0.0.