Create a surface between rectangles

Hi every one If I draw a number of four or more rectangles through the rectangle component and draw around it a larger rectangle using the offset component, how can I create a surface between each rectangle and the rectangle that surrounds it?

Very nice. Sorry, I hope you can bear, but I am starting to work. I take the first steps. What about the numbers below the component and how do they appear to me?

Turn profiler on

I am very grateful to you