> It is not easy to help you!

My wife would agree with you :P

(Seriously though, thank you for continuing to try)

> If I open your uploaded file as xlsx file, do the steps mentioned earlier and save the file as xls, then what's the problem?

The actual file has an embedded macro, which for corporate security reasons I'm not allowed to have access to. Saving it as .xlsx eliminates that macro, which would make the sheet non-functional for some important purposes. That said, I can get it down to under 900kb just by saving as .xlsm, which is a huge improvement, and the macro will still work there. I may try that.