How to add dollar sign to form calculation widget?

Thank you for your previous answer. Here is my second question. I have the calculation answer going to the PayPal amount box. I'd like the Form Calculator to fill in the number is US Dollars. Is this possible?

Yes, that is possible. Just add a $ sign in front of the number or calculation value. Make sure the currency sign is brown or string type so it will become static text.

Hope this helps.