The PRESENT-VALUE function returns a value that approximates the present value of a series of future period-end amounts specified
                  by argument-2 at a discount rate specified by argument-1. The type of this function is numeric. 
                  
 
            
            
               General Format
 
               	  
               	  
 
               
              
            
            
               Arguments
 
               	  
                
                  	 
                  - Argument-1 and argument-2 must be of the class numeric. 
                     	 
                  
- The value of argument-1 must be greater than -1. 
                     	 
                  
  
            
            
               Returned Values
 
               	  
                
                  	 
                  - The returned value is an approximation of the summation of a series of calculations with each term in the following form:
                     
                     		
                     argument-2 / (1+argument-1) ** n 
                        		
                      There is one term for each occurrence of argument-2. The exponent, n, is incremented from one by one for each term in the
                        series. 
                        		
                      
- Floating-point format is used for numeric non-integer results.