Arithmatic calculations while generating a Report from Report Builder

From the work item attributes, we need to do some Arithmatic calculations while generating the report using Report builder. Is there any way to do so?
For Ex: I have Efforts (Hrs) & Rate per Hour ($) attributes. In a report, I need a multiplied value of these two attributes in a separate column. Below should be column structure:
Resource Name - Efforts Spent - Rate per Hour ($) - Invested $s