so i got an assignment where i have to change it to find the total of the last array instead of what its doing now and finding the average


this is the array
Code:
passengerData[0] = ["Homer", "Simpson", 330, 1700, 1500, 220];
passengerData[1] = ["Marge", "Simpson", 750, 1700, 1500, 800];


and this is the function
Code:
function onTotalpoints(event: MouseEvent): void 
        {
            var var2:* = 0;
            var var3:* = 0;
            var var4:* = NaN;
            var var5:* = NaN;
            var var6:* = 0;
            var var7:* = 0;
            var var8:* = 0;
            var2 = -1;
            var3 = -1;
            var4 = 0;
            var5 = 0;
            var6 = 0;
            var7 = 0;      
            while (var7 < passengerData.length)
            {
                
                var2 = passengerData[var7][0].indexOf(first_txt.text);
                var3 = passengerData[var7][1].indexOf(second_txt.text);
                if (var2 != -1 && var3 != -1)
                {
                    var8 = 2;
                    while (var8 < passengerData[0].length)
                    {
                        var4 = passengerData[var7][var8];
                      var6++;
                      var8++;
                    }
                    var5 = var4 / var6;
                    listing = passengerData[var7][0] + "\'s Average is: " + var5;
                    message_txt.text = listing;
                }
                var7++;
            }
            return;
        } // end function
help would be much appreciated