687240 ÷ 2 
We want to figure out the number of times 687240 can be divided by 2.

Step 1:
If we divide 6 by 2, we get 3 and a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 0 after subtracting 6 from 6.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 2

Moving on to step 2:
8 divided by 2 is 4 with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
Subtract 8 from 8 to get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 2

Advancing to step 3:
When dividing 7 by 2, we get 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 343.0
Deduct 6 from 7 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 2

Going ahead to step 4:
2 goes into 12 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 3436.0
Subtracting 12 from 12 leaves us with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 2

On to step 5:
2 goes into 4 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 34362.0
Deduct 4 from 4 and we're left with 0.
Take the next digit (0) from the dividend and append it to 0, then repeat: 0 / 2

Advancing to step 6:
2 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 343620.0
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.

On to 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: 343620.0
If we subtract 0 from 0, 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.

Advancing to 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: 343620.0
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.

Our division results in 343620.0 with a remaining 0.0.