I had previously posted a question in regards to sorting data and this formula below has been a lifesaver! However I've been trying my hardest and am now strapped for time and I can't seem to get this to work if I want to reference A2:A100 in another worksheet. Ever time I try it opens a box to open a document!(with the data I'm pulling I'm using column E but I doubt that matters). Please help 
If you are wanting to count how many cells in a range have the text "1.3" you could do:
=SUMPRODUCT(1*(ISNUMBER(SEARCH("1.3",A2:A100))))
If you are wanting to count how many cells in a range have the text "1.3" you could do:
=SUMPRODUCT(1*(ISNUMBER(SEARCH("1.3",A2:A100))))