 ለስንት ቁጥር A ዱን አንድ ጊዜ ለመሥራት በሚፈለገው የሰዓት ብዛት ተባዝቶ (የጊዜ-ዙር).
It's roughly the amount of work that needs to be done (in man hours) divided by the amount of work that's being done on average (man hours per hour).