Circle groups to show 4x(2x2).

To represent this operation as circles, we first graph what's in the parenthesis, which represents two circles with two circles each, that will give us the blur circle with 4 elements.

Then, each blue circle must be reproduced for times, because the expression 2x2 is multiplied by 4, giving as a result 16 circles in total. 4 groups containing 2 groups of 2 circles each.

The image is attached, it shows the graphic result.