Have not done this before but you could try this. Create a new variable based on the value you want to use (e.g., 3.333333333) then in the value cell for that variable enter something like

=TEXT(B1, "$0.00")

or

=TEXT(B1, "00.000")

And that sort of thing. I got thsi from the section on the "text" function in Excel:

Converts a value to text in a specific number format.
Syntax
TEXT(value,format_text)
Value is a numeric value, a formula that evaluates to a numeric value, or a reference to a cell containing a numeric value.
Format_text is a number format in text form from in the Category box on the Number tab in the Format Cells dialog box.
Remarks
  • Format_text cannot contain an asterisk (*).
  • Formatting a cell with an option on the Number tab (Cells command, Format menu) changes only the format, not the value. Using the TEXT function converts a value to formatted text, and the result is no longer calculated as a number.
Example
The example may be easier to understand if you copy it to a blank worksheet.