Excel IF Function Help!!! plz?

Ok I am having problem with Excel IF Function.

Here is the problem.

(Cell A1) 10209.0 - (Cell A2) 10208.7
(Cell A5) = A1 - A2

So (Cell A5) i have the answer of 0.3

Then on (Cell A7) i put IF Function

=IF(A5=0.3,2,0) I put if A5 is equal 0.3 then give me 3 or else 0

But the answer Excel gave me is "0"
WHY ???? A5 IS = 0.3

WHY ?? HELP Plz....

Thanks