Hi,
I am a chemical engineer and I have over five years experience in using Excel at an advanced level (complex formulas, array formulas, pivot table and charts, macros and VBA scripts, automatic calculation sheets).
I can create the excel calculator if you can assist me with the calculation method (mathematical equation).
If you will give me the opportunity to work on your project I am sure you will be satisfied by the quality of my work.
Best regards,
Florin Enache.