Want to display dollar signs in front of my numbers

My data feed has a number column that I am using in several widgets as shown here:

I would like to display dollar signs in front of these numbers. E.g., "$241,352,785", "$0", etc. Is there a way I can do this? I thought it might be done in formatting, but the only thing I am able to do there is pick the number of decimal places.

Thank you,

Scott