In start_num position use FIND function. Below is a brief summary. Double click on REPLACE function.
Open the Excel Find and Replace dialog by pressing the Ctrl F shortcut.
Excel sees the as a filler for any symbolcharacter even though the symbol I want to replace is the itself ie. SUBSTITUTESUBSTITUTESUBSTITUTESUBSTITUTE B5INDEX find1INDEX replace1INDEX find2INDEX replace2INDEX find3INDEX replace3INDEX find4INDEX replace4 where find is the named range E5E8 and replace is the named range F5F8. Find value in a range worksheet or workbook. Open the dialog by pressing Ctrl F.