Open MSO 2007 Files in Earlier Versions
In a situation where group projects and collaborative works are a necessity to get things done, and a non-ideal working environment of different computers with different software, I happily share a solution for those people who cannot just give up an older licensed copy for a cracked update.
Avoid MS Excel 2007
MS Excel has a certain multiplication bug reproduced by doing multiplication that would result to 65,535 (0xFFFF). Try =850*77.1 on yours.