If you need to add a comma after the first word in each cell in Excel using the Replicate or Substitute function, read through this article.

How to Separate Text From Numbers in Excel. When you open a raw data file in Excel, the program doesn't always recognize the way in which the data is formatted, such as comma-delimited, tab ...

How to Make a List of Excel Data Into Data Separated by Comma. Microsoft Excel 2010 stores data within cells, which are simply segregated pieces of the spreadsheet that Excel can then reference to ...