I would like to convert all the cells with contents in Column I to a number.
I am using the following macro to do so, however I am getting zeros in rows
that do not have any contents in their cells. Can you tell me how to change
the code below so that only the cells with contents in Column I will be
converted to numbers?

Sub Macro5()
Columns("J:J").Select
Selection.Insert Shift:=xlToRight
Range("J2").Select
ActiveCell.FormulaR1C1 = "1"
Selection.Copy
Range("I2:I100").Select
Selection.PasteSpecial Paste:=xlPasteAll, Operation:=xlMultiply, _
SkipBlanks:=False, Transpose:=False
Application.CutCopyMode = False

Columns("J:J").Delete

End Sub