— Since there is no user guide or available information about this procedure, I...

— The formula for the C1 cell should look like this: =if(A1<A2, A1-A2, 0) The...

— Any major version of Excel is able to save and export its files to old excel...

— Try To Uninstall completely and Re install and Keep updating your Office...

— For this request you might need to use Google Search to gather information,...

— You can choose from Print > Print>PDFCreator > Properties. Good Luck.