a=[["doc1",["hi","bye","guy"],[],[],[]],["doc2",["bye","now","is","hi","hi","hi"],[],[],[]],["doc3",["bye","now","is","hi","hi","hi","why","go","guy"],[],[],[]]]

i have this array i'd like to multiply the 2nd inner array with the 3rd
inner array and fill the 4th inner array with these results but i don't
know how to do it. by the way the 2nd and the third inner array are of
type float.
anybody ca help please?
and thanks in advance:)

a.each{
   |x|
    x.each{
     |y|
        y.each{  #i have the error in here

        }


  }
}

and the error is
tester.rb:50: undefined method `each' for 1:Fixnum (NoMethodError)
  from tester.rb:48:in `each'
  from tester.rb:48
  from tester.rb:46:in `each'
  from tester.rb:46

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