I don't know the answer but Hewlett Packard in Corvalis WA does. The business analyst hand held calculator by HP does just that. It puts comma to the left but not to the right of the decimal point. For me I object to comma in a number that is no longer a number. In business with large numbers to report in a profit and loss statement amounts in dollars are only reported to the penny and thus there are no more than 2 places after the decimal point. BUT with HP calculator you can specify how many places after the decimal point to show and if you chose more than 2 there are no commas there.
Another thing that business people do is avoid the minus sign So a negative balance is printed in red or enclosed in parens.
In Europe the convention for decimal point is different and they use comma for the decimal point and period as a separator.
Liz wrote in message ... >Why are there no comma's to the right of a decimal? >Who made this rule? >Why? & When?