AppleScript sum of a list

I'm trying to get the sum from a list.

The list newTotal:

{"30.00", "30.00"}

repeat with each from 1 to count of items of newTotal
    set myFinalTotal to myFinalTotal + each
end repeat

But the result is unexpected = 3

How should I do the math?

Modifying your original attempt:

set myList to {"30.00", "30.00"}
set myFinalTotal to 0

repeat with x in myList
    set myFinalTotal to myFinalTotal + x
end repeat

myFinalTotal

And for the joy of learning:

• Recursive:

  to sumItems from L as list
      if L = {} then return 0
      (L's first item) + (sumItems from the rest of L)
  end sumItems
  

• Iterative:

  to sumItems from L as list
      tell (a reference to last item of {0})
          repeat while L ≠ {}
              set the contents to it + (L's first item)
              set L to the rest of L
          end repeat
  
          return the contents
      end tell
   end sumItems