Question 151175
Many times, this type of problem is best understood by making the problem 'simpler'.

So, instead of 1000, use a smaller number. Let's choose 10
How many numbers are divisible by 2 and between 1 and 10? 2,4,6,8,10 . So 5 are.
Divide 10 by 2. What do you get?

Now try 20. What do you get?

Do the same for 10 divided by 9. only 9. 10/9 = 1.11. Using the whole number result of the division we see that there is 1.
Try 20. What do you get? 

Now take on the given problem

Take 1000 and divide by 2. What do you get?
Take 1000 and divide by 9. What do you get?

Take the whole number (not the remainder) of each result.