Gentlemen,
Thank you for your help.
Although I'm not a professional programmer, I'm kind of getting the idea.

Sean



"Sean" wrote:

Actually I found this problem recently and don't know why this could happen.
I did simple minus calculation of these two values: (-0.365)-(-0.3575)
and excel shows -0.0075000000000000100000000.
It is not exactly -0.0075.
Do I need to change some settings or ....?

Thank you