866490 ÷ 2 
We're looking to find how many times 2 goes into 866490.

On to step 1:
2 can be fit into 8 4 times, resulting in a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 8 from 8 and we're left with 0.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 2

Moving on to step 2:
2 can be fit into 6 3 times, resulting in a remainder of 0.
The next digit of our result is 3. 
Result so far: 43.0
Subtracting 6 from 6 leaves us with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 2

Going ahead to step 3:
The number 2 fits into 6 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 433.0
If we take 6 away from 6, we end up with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 2

Moving on to step 4:
The number 2 fits into 4 2 times, leaving a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 4332.0
Deduct 4 from 4 and we're left with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 2

Going ahead to step 5:
2 can be fit into 9 4 times, resulting in a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 43324.0
Subtracting 8 from 9 leaves us with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 2

Moving on to step 6:
10 divided by 2 is 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 433245.0
If we take 10 away from 10, we end up 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.
Put 0 as the next digit of the answer. 
Result so far: 433245.0
The remainder is 0 after subtracting 0 from 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 8:
2 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: 433245.0
The remainder is 0 after subtracting 0 from 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 quotient of the division is 433245.0, and the remainder is 0.0.