multi row card

Hi, good morning.

I have a multi row card that dispays 5 projects that I am tracking and shows a value for each which is return on investment.

So each project is displayed on a separate line. I also then want to include summary line at the foot of the card to show the total return on investment across the 5 projects. So basically I need to display ROI for each project and have a sum row at the foot of the card.

I'm sure this must be simple, please can someone point the way?

Thanks in advance.