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.

Also known as a Comma Separated Value file, a comma delimited file is a standard file type that a number of different data-manipulation programs can read and understand, including Microsoft Excel.

For Excel to divide the values, however, the cell must contain a delimiter, a character that specifies where the first number ends and the second one begins.