how would you decompose?

Question

How would you decompose the large rectangle into 2 1/2 groups with 3 1/2  squares in each group, so as to describe the area of the rectangle as 

2 1/2 * 3 1/2cm^2

Answer 1

 

XX  XX  XX  X

XX  XX  XX  X

 

XX  XX  XX  X

XX  XX  XX  X

 

XX  XX  XX  X

 

Each X is (1/2)cm by (1/2)cm.