Ductwork Calculations

I have a project that involves reviewing ductwork information (line diagrams and excel tables containing duct diameters, lengths, etc.) and calculating estimated pressure and velocity values in the excel tables for each section. I would like to do one sample system (estimated 1-2 hours of work), and if it works out I have 12-15 more systems that we can do. I would like to complete all of them within one week.

Thanks,
Matt