BudgetAmountNumber__c
    false
    if(isblank(BudgetAmount1__c), 0, 
if(isnumber(BudgetAmount1__c), VALUE(BudgetAmount1__c), 
if(CONTAINS(BudgetAmount1__c, ','), VALUE(SUBSTITUTE(BudgetAmount1__c, ',', '')), 0)
)) + 
if(isblank(BudgetAmount2__c), 0, 
if(isnumber(BudgetAmount2__c), VALUE(BudgetAmount2__c), 
if(CONTAINS(BudgetAmount2__c, ','), VALUE(SUBSTITUTE(BudgetAmount2__c, ',', '')), 0)
)) + 
if(isblank(BudgetAmount3__c), 0, 
if(isnumber(BudgetAmount3__c), VALUE(BudgetAmount3__c), 
if(CONTAINS(BudgetAmount3__c, ','), VALUE(SUBSTITUTE(BudgetAmount3__c, ',', '')), 0)
)) + 
if(isblank(BudgetAmount4__c), 0, 
if(isnumber(BudgetAmount4__c), VALUE(BudgetAmount4__c), 
if(CONTAINS(BudgetAmount4__c, ','), VALUE(SUBSTITUTE(BudgetAmount4__c, ',', '')), 0)
)) + 
if(isblank(BudgetAmount5__c), 0, 
if(isnumber(BudgetAmount5__c), VALUE(BudgetAmount5__c), 
if(CONTAINS(BudgetAmount5__c, ','), VALUE(SUBSTITUTE(BudgetAmount5__c, ',', '')), 0)
))
    
    18
    false
    2
    false
    false
    Number
    false