fab333 Messages 3 Reaction score 0 Thread starter Feb 26, 2012 #1 I do not understand how to calculate the formula in first attachment. Can anyone help me? thanks Attachments MC_formula.jpeg 16.6 KB · Views: 519 definitions.jpeg 7 KB · Views: 508 definitions_2.jpeg 5.3 KB · Views: 484 Last edited: Feb 26, 2012