This function converts the specified Roman value to an Arabic value.
ARABIC(text)
For the argument, a string enclosed in quotation marks or a reference to the cell (posessing text value only) can be specified.
In this function, specifying the text in lower case or upper case doesn't matter because the case of the argument (supplied as a text value) is ignored.
Accepts string data. Returns numeric data.
ARABIC("XIXI") gives the result 20
ARABIC("LIV") gives the result 54
ARABIC(C2) gives the result 61 where C2 is a cell reference containing the text value LXI.