Add a custom calculations

Add a custom calculations
ratenfenger
Charges Fixes
??rating.lastmodif?? 24/01/2019. ??rating.partinit?? Fianso1995.
Description: Couts directs des charges fixes
Expression:
{Budget formation ouvriers|N}+{Budget publicité|N}+{Budget R et D|N}+{Formation ouvriers|N}+{Masse salariale|N}+{Budget machine|N}+{Coût Energie|N}

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